Thermo Scientific™

FHT 1702 Iodine Monitor

Catalog number: 4250310
Thermo Scientific™

FHT 1702 Iodine Monitor

Catalog number: 4250310
Inspect for gaseous iodine activity virtually anywhere in the nuclear power plant with the Thermo Scientific™ FHT 1702 Iodine Monitor. Designed for various air contamination monitoring applications as well as for immission and emission measurements, the FHT device monitors gaseous iodine activity from first measurement to present activity concentration. Depending on the measuring application, the total iodine activity can be detected. A second energy window with thresholds above and below the iodine window measures the background count rate (trapezoid method) in parallel to the sampling.
 
Catalog Number
4250310
Unit Size
Each
Description
FHT 1702 L Mobile Iodine Monitor
Price (USD)
Full specifications
TypeIodine Monitor
Diameter (Metric) Detector Window2 in.
Power Consumption300 VA
DescriptionFHT 1702 L Mobile Iodine Monitor
Detector Efficiency0.05 Cps/Bq
Detector TypeNaI
Display TypeWindows-based touch screen panel PC
Height (English)51.2 in. without packing
Height (Metric)130 cm without packing
Inputs6 counters in total
4 counters are used for the three energy windows: Background energy window left; iodine energy window; background energy window right
Depth (English)25.6 in. without packing
Depth (Metric)65 cm without packing
Measuring RangeMin. 100;  Max. 105 Bq/m3 related to 60 minutes sampling time
Measuring Principle: Fixed filter monitor for the detection of the 364 keV line of  131I by a NaI detector. Compensation of higher energy gamma lines is realized with the help of online background subtraction by the trapezoid method. A built-in lutetium adapter is used for continuous peak-stabilization.
Radiation Type131I
Resolution10% for 137 Cs
Sensitivity10Cps/μSvH-1 without compensation
Ambient TemperatureOperating: Min. +15°C; Max. +45°C
PowerOperating voltage: 900V
Weight (English)187 lb. net, without packing
Weight (Metric)85 kg net, without packing
Width (English)18.9 in. without packing
Width (Metric)48 cm without packing
ApplicationsIodine Monitoring
Detection LimitsMinimum Detectable Activity Concentration (MDAC) provided according to ISO 11929
<1 Bq/m3 related to 131I with t1 = 5 min, t2 = 30 min at a constant dose rate level of 100 nSv/h
<40 Bq/m3 related to 131I with t1 = 5 min, t2 = 30 min at a constant dose rate level of 100 nSv/h (60Co)
Alarm/Fail RelaysSignal horn: OUTO
Malfunction: OUT1
Alarm 1 (pre-alarm): OUT2
Alarm 2: (main alarm): OUT3
Measurement in progress: OUT4
ConnectionsUSB port, ethernet port, USB stick
EfficiencyTyp. 0.05  Cps/Bq;  131I
Filter TypeGlass fiber GF10, grade H12 for prevention of contamination and pollution of the iodine cartridge by aerosols
Air intake flange: DN 16; KF
Air intake filter diameter: 50 mm; fiber glass GF 10
Filter cartridge diameter: 58 mm; charcoal
Cartridge service life: several weeks depending on the iodine conc. of the ambient air
Cartridge activity load: 1 MBq
Electrical RequirementsMains voltage Typ. 230 V; AC Single phase
Mains frequency:  Typ. 50 Hz
Mains fuse: 4 A; slow
Pump fuse: 4 A; slow
Mains chord: 6 m
Environmental ConditionsPermitted temp. gradient: Max: 15 K/h
Sampled air intake temperature:  Min. -10°C, Max. +45°C with optional heating on
Barometric pressure: Min. 950, Max. 1050 hPa
Rel. humidity of sampled air at intake: Min. 20, Max. 80 % R.H. non-condensing
Shielding Type25 mm, lead in all directions
Omni-directional lead shielding made of ring elements above the filter drawer with top lid. A built-in lutetium adapter is used for continuous peak-stabilization is integrated in the lead shield.
PumpRotary vane vacuum pump; oil-free; air-cooled
Air flow rate: typ. 4, Max. 5 m3/h
Supply voltage: 230V AC, single phase
Supply frequency: 50 Hz
Power consumption: 250 VA
Protection class: IP54
Noise level: 68 dB at 1 m distance
Maintence: 2000 operation hours
Digital InputsPush button “Ack alarm”: IN0
Signal “Air flow ok”: IN1
Signal “Heating ok”: IN2
Reserved: IN3
Unit SizeEach
Catalog Number
Unit Size
Each
Description
FHT 1702 L-125 Mobile Iodine Monitor
Price (USD)
Full specifications
TypeIodine Monitor
Diameter (Metric) Detector Window2 in.
Power Consumption300 VA
Background LevelTyp. 0.2 cps in compensation window, amb. Dose rate level approx. 100nSv/h
0.07 cps in iodine window
DescriptionFHT 1702 L-125 Mobile Iodine Monitor
Detector Efficiency0.093 Cps/Bq
Detector TypeNaI
Display TypeWindows-based touch screen panel PC
Height (English)51.2 in. without packing
Height (Metric)130 cm without packing
Inputs6 counters in total
4 counters are used for the three energy windows: Background energy window left; iodine energy window; background energy window right
Depth (English)25.6 in. without packing
Depth (Metric)65 cm without packing
Measuring RangeMin. 100;  Max. 105 Bq/m3 related to 60 minutes sampling time
Measuring Principle: The sample air is passed through a 2 ¼ “ standard filter cartridge filled with iodine adsorbent. Elementary as well as organically bound iodine are precipitated. The filter cartridge is manually exchanged. A NaI scintillation detector located in the axis of the filter cartridge continuously measures the low-energy gamma quanta emitted by the accumulated I-125 activity. The pulse height is discriminated by an appropriately set iodine window.
Radiation Type125I
Resolution10% for 137 Cs
Ambient TemperatureOperating: Min. +15°C; Max. +45°C
PowerOperating voltage: 900V
Weight (English)187 lb. net, without packing
Weight (Metric)85 kg net, without packing
Width (English)18.9 in. without packing
Width (Metric)48 cm without packing
ApplicationsIodine Monitoring
Detection LimitsMinimum Detectable Activity Concentration (MDAC) provided according to ISO 11929
<0.6 Bq/m3 related to 125I with t1 = 5 min, t2 = 30 min. at a constant dose rate level of 100 nSv/h
Alarm/Fail RelaysSignal horn: OUTO
Malfunction: OUT1
Alarm 1 (pre-alarm): OUT2
Alarm 2: (main alarm): OUT3
Measurement in progress: OUT4
ConnectionsUSB port, ethernet port, USB stick
EfficiencyTyp. 0.093  cps/Bq
Filter TypeGlass fiber GF10, grade H12 for prevention of contamination and pollution of the iodine cartridge by aerosols
Air intake flange: DN 16; KF
Air intake filter diameter: 50 mm; S grade
Filter cartridge diameter: 58 mm; charcoal
Cartridge service life: several weeks depending on the iodine conc. of the ambient air
Cartridge activity load: 1 MBq
Electrical RequirementsMains voltage Typ. 230 V; AC Single phase
Mains frequency:  Typ. 50 Hz; Max. 60 Hz
Mains fuse: 4 A; slow
Pump fuse: 4 A; slow
Mains chord: 6 m
Environmental ConditionsPermitted temp. gradient: Max: 15 K/h
Sampled air intake temperature:  Min. -10°C, Max. +45°C with optional heating on
Barometric pressure: Min. 500, Max. 1050 hPa
Rel. humidity of sampled air at intake: Min. 20, Max. 80 % R.H. non-condensing
Shielding Type25 mm, lead in all directions
Omni-directional lead shielding made of ring elements above the filter drawer with top lid. A built-in lutetium adapter is used for continuous peak-stabilization is integrated in the lead shield.
PumpRotary vane vacuum pump; oil-free; air-cooled
Air flow rate: typ. 4, Max. 5 m3/h
Supply voltage: 230V AC, single phase
Supply frequency: 50 Hz
Power consumption: 250 VA
Protection class: IP54
Noise level: 68 dB at 1 m distance
Digital InputsPush button “Ack alarm”: IN0
Signal “Air flow ok”: IN1
Signal “Heating ok”: IN2
Reserved: IN3
Unit SizeEach
Catalog Number
Unit Size
Each
Description
FHT 1702 S-125 Iodine Monitor (fixed)
Price (USD)
Full specifications
TypeIodine Monitor
Diameter (Metric) Detector Window2 in.
Power Consumption300 VA
Background LevelTyp. 0.2 cps in compensation window, amb. Dose rate level approx. 100nSv/h
0.07 cps in iodine window
DescriptionFHT 1702 S-125 Iodine Monitor (fixed)
Detector Efficiency0.093 Cps/Bq
Detector TypeNaI
Display TypeWindows-based touch screen panel PC
Height (English)63 in. without packing
Height (Metric)160 cm without packing
Inputs6 counters in total
4 counters are used for the three energy windows: Background energy window left; iodine energy window; background energy window right
Depth (English)31.5 in. without packing
Depth (Metric)80 cm without packing
Measuring RangeMin. 100;  Max. 105 Bq/m3 related to 60 minutes sampling time
Measuring Principle: The sample air is passed through a 2 ¼ “ standard filter cartridge filled with iodine adsorbent. Elementary as well as organically bound iodine are precipitated. The filter cartridge is manually exchanged. A NaI scintillation detector located in the axis of the filter cartridge continuously measures the low-energy gamma quanta emitted by the accumulated I-125 activity. The pulse height is discriminated by an appropriately set iodine window.
Radiation Type131I
Resolution10% for 137 Cs
Ambient TemperatureOperating: Min. +15°C; Max. +45°C
PowerOperating voltage: 900V
Weight (English)375 lb. net, without packling
Weight (Metric)170 kg net, without packing
Width (English)23.6 in. without packing
Width (Metric)60 cm without packing
ApplicationsIodine Monitoring
Detection LimitsMinimum Detectable Activity Concentration (MDAC) provided according to ISO 11929
<0.6 Bq/m3 related to 125I with t1 = 5 min, t2 = 30 min. at a constant dose rate level of 100 nSv/h
Alarm/Fail RelaysSignal horn: OUTO
Malfunction: OUT1
Alarm 1 (pre-alarm): OUT2
Alarm 2: (main alarm): OUT3
Measurement in progress: OUT4
ConnectionsUSB port, ethernet port, USB stick
EfficiencyTyp. 0.093  cps/Bq; 125I
Filter TypeGlass fiber GF10, grade H12 for prevention of contamination and pollution of the iodine cartridge by aerosols
Air intake flange: DN 16; KF
Air intake filter diameter: 50 mm; S grade
Filter cartridge diameter: 58 mm; charcoal
Cartridge service life: several weeks depending on the iodine conc. of the ambient air
Cartridge activity load: 1 MBq
Electrical RequirementsMains voltage Typ. 230 V; AC Single phase
Mains frequency:  Typ. 50 Hz; Max. 60 Hz
Mains fuse: 4 A; slow
Pump fuse: 4 A; slow
Mains chord: 6 m
Environmental ConditionsPermitted temp. gradient: Max: 15 K/h
Sampled air intake temperature:  Min. -10°C, Max. +45°C with optional heating on
Barometric pressure: Min. 500, Max. 1050 hPa
Rel. humidity of sampled air at intake: Min. 20, Max. 80 % R.H. non-condensing
Shielding Type25 mm, lead in all directions
Omni-directional lead shielding made of ring elements above the filter drawer with top lid. A built-in lutetium adapter is used for continuous peak-stabilization is integrated in the lead shield.
PumpAir flow rate: typ. 4, Max. 5 m3/h
Supply voltage: 230V AC, single phase
Supply frequency: 50 Hz
Power consumption: 250 VA
Protection class: IP54
Noise level: 68 dB at 1 m distance
Maintenance: 6 months
Digital InputsPush button “Ack alarm”: IN0
Signal “Air flow ok”: IN1
Signal “Heating ok”: IN2
Reserved: IN3
Unit SizeEach
Showing 3 of 3
Catalog NumberSpecificationsUnit SizeDescriptionPrice (USD)
4250310Full specifications
EachFHT 1702 L Mobile Iodine MonitorRequest A Quote
TypeIodine Monitor
Diameter (Metric) Detector Window2 in.
Power Consumption300 VA
DescriptionFHT 1702 L Mobile Iodine Monitor
Detector Efficiency0.05 Cps/Bq
Detector TypeNaI
Display TypeWindows-based touch screen panel PC
Height (English)51.2 in. without packing
Height (Metric)130 cm without packing
Inputs6 counters in total
4 counters are used for the three energy windows: Background energy window left; iodine energy window; background energy window right
Depth (English)25.6 in. without packing
Depth (Metric)65 cm without packing
Measuring RangeMin. 100;  Max. 105 Bq/m3 related to 60 minutes sampling time
Measuring Principle: Fixed filter monitor for the detection of the 364 keV line of  131I by a NaI detector. Compensation of higher energy gamma lines is realized with the help of online background subtraction by the trapezoid method. A built-in lutetium adapter is used for continuous peak-stabilization.
Radiation Type131I
Resolution10% for 137 Cs
Sensitivity10Cps/μSvH-1 without compensation
Ambient TemperatureOperating: Min. +15°C; Max. +45°C
PowerOperating voltage: 900V
Weight (English)187 lb. net, without packing
Weight (Metric)85 kg net, without packing
Width (English)18.9 in. without packing
Width (Metric)48 cm without packing
ApplicationsIodine Monitoring
Detection LimitsMinimum Detectable Activity Concentration (MDAC) provided according to ISO 11929
<1 Bq/m3 related to 131I with t1 = 5 min, t2 = 30 min at a constant dose rate level of 100 nSv/h
<40 Bq/m3 related to 131I with t1 = 5 min, t2 = 30 min at a constant dose rate level of 100 nSv/h (60Co)
Alarm/Fail RelaysSignal horn: OUTO
Malfunction: OUT1
Alarm 1 (pre-alarm): OUT2
Alarm 2: (main alarm): OUT3
Measurement in progress: OUT4
ConnectionsUSB port, ethernet port, USB stick
EfficiencyTyp. 0.05  Cps/Bq;  131I
Filter TypeGlass fiber GF10, grade H12 for prevention of contamination and pollution of the iodine cartridge by aerosols
Air intake flange: DN 16; KF
Air intake filter diameter: 50 mm; fiber glass GF 10
Filter cartridge diameter: 58 mm; charcoal
Cartridge service life: several weeks depending on the iodine conc. of the ambient air
Cartridge activity load: 1 MBq
Electrical RequirementsMains voltage Typ. 230 V; AC Single phase
Mains frequency:  Typ. 50 Hz
Mains fuse: 4 A; slow
Pump fuse: 4 A; slow
Mains chord: 6 m
Environmental ConditionsPermitted temp. gradient: Max: 15 K/h
Sampled air intake temperature:  Min. -10°C, Max. +45°C with optional heating on
Barometric pressure: Min. 950, Max. 1050 hPa
Rel. humidity of sampled air at intake: Min. 20, Max. 80 % R.H. non-condensing
Shielding Type25 mm, lead in all directions
Omni-directional lead shielding made of ring elements above the filter drawer with top lid. A built-in lutetium adapter is used for continuous peak-stabilization is integrated in the lead shield.
PumpRotary vane vacuum pump; oil-free; air-cooled
Air flow rate: typ. 4, Max. 5 m3/h
Supply voltage: 230V AC, single phase
Supply frequency: 50 Hz
Power consumption: 250 VA
Protection class: IP54
Noise level: 68 dB at 1 m distance
Maintence: 2000 operation hours
Digital InputsPush button “Ack alarm”: IN0
Signal “Air flow ok”: IN1
Signal “Heating ok”: IN2
Reserved: IN3
Unit SizeEach
P4250320Full specifications
EachFHT 1702 L-125 Mobile Iodine MonitorRequest A Quote
TypeIodine Monitor
Diameter (Metric) Detector Window2 in.
Power Consumption300 VA
Background LevelTyp. 0.2 cps in compensation window, amb. Dose rate level approx. 100nSv/h
0.07 cps in iodine window
DescriptionFHT 1702 L-125 Mobile Iodine Monitor
Detector Efficiency0.093 Cps/Bq
Detector TypeNaI
Display TypeWindows-based touch screen panel PC
Height (English)51.2 in. without packing
Height (Metric)130 cm without packing
Inputs6 counters in total
4 counters are used for the three energy windows: Background energy window left; iodine energy window; background energy window right
Depth (English)25.6 in. without packing
Depth (Metric)65 cm without packing
Measuring RangeMin. 100;  Max. 105 Bq/m3 related to 60 minutes sampling time
Measuring Principle: The sample air is passed through a 2 ¼ “ standard filter cartridge filled with iodine adsorbent. Elementary as well as organically bound iodine are precipitated. The filter cartridge is manually exchanged. A NaI scintillation detector located in the axis of the filter cartridge continuously measures the low-energy gamma quanta emitted by the accumulated I-125 activity. The pulse height is discriminated by an appropriately set iodine window.
Radiation Type125I
Resolution10% for 137 Cs
Ambient TemperatureOperating: Min. +15°C; Max. +45°C
PowerOperating voltage: 900V
Weight (English)187 lb. net, without packing
Weight (Metric)85 kg net, without packing
Width (English)18.9 in. without packing
Width (Metric)48 cm without packing
ApplicationsIodine Monitoring
Detection LimitsMinimum Detectable Activity Concentration (MDAC) provided according to ISO 11929
<0.6 Bq/m3 related to 125I with t1 = 5 min, t2 = 30 min. at a constant dose rate level of 100 nSv/h
Alarm/Fail RelaysSignal horn: OUTO
Malfunction: OUT1
Alarm 1 (pre-alarm): OUT2
Alarm 2: (main alarm): OUT3
Measurement in progress: OUT4
ConnectionsUSB port, ethernet port, USB stick
EfficiencyTyp. 0.093  cps/Bq
Filter TypeGlass fiber GF10, grade H12 for prevention of contamination and pollution of the iodine cartridge by aerosols
Air intake flange: DN 16; KF
Air intake filter diameter: 50 mm; S grade
Filter cartridge diameter: 58 mm; charcoal
Cartridge service life: several weeks depending on the iodine conc. of the ambient air
Cartridge activity load: 1 MBq
Electrical RequirementsMains voltage Typ. 230 V; AC Single phase
Mains frequency:  Typ. 50 Hz; Max. 60 Hz
Mains fuse: 4 A; slow
Pump fuse: 4 A; slow
Mains chord: 6 m
Environmental ConditionsPermitted temp. gradient: Max: 15 K/h
Sampled air intake temperature:  Min. -10°C, Max. +45°C with optional heating on
Barometric pressure: Min. 500, Max. 1050 hPa
Rel. humidity of sampled air at intake: Min. 20, Max. 80 % R.H. non-condensing
Shielding Type25 mm, lead in all directions
Omni-directional lead shielding made of ring elements above the filter drawer with top lid. A built-in lutetium adapter is used for continuous peak-stabilization is integrated in the lead shield.
PumpRotary vane vacuum pump; oil-free; air-cooled
Air flow rate: typ. 4, Max. 5 m3/h
Supply voltage: 230V AC, single phase
Supply frequency: 50 Hz
Power consumption: 250 VA
Protection class: IP54
Noise level: 68 dB at 1 m distance
Digital InputsPush button “Ack alarm”: IN0
Signal “Air flow ok”: IN1
Signal “Heating ok”: IN2
Reserved: IN3
Unit SizeEach
FHT1702S-125Full specifications
EachFHT 1702 S-125 Iodine Monitor (fixed)Request A Quote
TypeIodine Monitor
Diameter (Metric) Detector Window2 in.
Power Consumption300 VA
Background LevelTyp. 0.2 cps in compensation window, amb. Dose rate level approx. 100nSv/h
0.07 cps in iodine window
DescriptionFHT 1702 S-125 Iodine Monitor (fixed)
Detector Efficiency0.093 Cps/Bq
Detector TypeNaI
Display TypeWindows-based touch screen panel PC
Height (English)63 in. without packing
Height (Metric)160 cm without packing
Inputs6 counters in total
4 counters are used for the three energy windows: Background energy window left; iodine energy window; background energy window right
Depth (English)31.5 in. without packing
Depth (Metric)80 cm without packing
Measuring RangeMin. 100;  Max. 105 Bq/m3 related to 60 minutes sampling time
Measuring Principle: The sample air is passed through a 2 ¼ “ standard filter cartridge filled with iodine adsorbent. Elementary as well as organically bound iodine are precipitated. The filter cartridge is manually exchanged. A NaI scintillation detector located in the axis of the filter cartridge continuously measures the low-energy gamma quanta emitted by the accumulated I-125 activity. The pulse height is discriminated by an appropriately set iodine window.
Radiation Type131I
Resolution10% for 137 Cs
Ambient TemperatureOperating: Min. +15°C; Max. +45°C
PowerOperating voltage: 900V
Weight (English)375 lb. net, without packling
Weight (Metric)170 kg net, without packing
Width (English)23.6 in. without packing
Width (Metric)60 cm without packing
ApplicationsIodine Monitoring
Detection LimitsMinimum Detectable Activity Concentration (MDAC) provided according to ISO 11929
<0.6 Bq/m3 related to 125I with t1 = 5 min, t2 = 30 min. at a constant dose rate level of 100 nSv/h
Alarm/Fail RelaysSignal horn: OUTO
Malfunction: OUT1
Alarm 1 (pre-alarm): OUT2
Alarm 2: (main alarm): OUT3
Measurement in progress: OUT4
ConnectionsUSB port, ethernet port, USB stick
EfficiencyTyp. 0.093  cps/Bq; 125I
Filter TypeGlass fiber GF10, grade H12 for prevention of contamination and pollution of the iodine cartridge by aerosols
Air intake flange: DN 16; KF
Air intake filter diameter: 50 mm; S grade
Filter cartridge diameter: 58 mm; charcoal
Cartridge service life: several weeks depending on the iodine conc. of the ambient air
Cartridge activity load: 1 MBq
Electrical RequirementsMains voltage Typ. 230 V; AC Single phase
Mains frequency:  Typ. 50 Hz; Max. 60 Hz
Mains fuse: 4 A; slow
Pump fuse: 4 A; slow
Mains chord: 6 m
Environmental ConditionsPermitted temp. gradient: Max: 15 K/h
Sampled air intake temperature:  Min. -10°C, Max. +45°C with optional heating on
Barometric pressure: Min. 500, Max. 1050 hPa
Rel. humidity of sampled air at intake: Min. 20, Max. 80 % R.H. non-condensing
Shielding Type25 mm, lead in all directions
Omni-directional lead shielding made of ring elements above the filter drawer with top lid. A built-in lutetium adapter is used for continuous peak-stabilization is integrated in the lead shield.
PumpAir flow rate: typ. 4, Max. 5 m3/h
Supply voltage: 230V AC, single phase
Supply frequency: 50 Hz
Power consumption: 250 VA
Protection class: IP54
Noise level: 68 dB at 1 m distance
Maintenance: 6 months
Digital InputsPush button “Ack alarm”: IN0
Signal “Air flow ok”: IN1
Signal “Heating ok”: IN2
Reserved: IN3
Unit SizeEach
Showing 3 of 3

The FHT 1702 Iodine Monitor comes in fixed units and mobile units for easy transport.

  • Maintenance-free and low-noise gas ring vacuum pump
  • User-friendly, maintenance-free long term operation
  • For use in ambient air monitoring networks or stack emissions monitoring systems
  • Excellent selectivity against other iodine isotopes or interfering noble gases
  • Direct read-out of measured values in physical units of Bq/m3
  • Aerosol filter heated air inlet for optimized iodine retention
  • Menu-driven calibration procedure with complete track record of efficiency data.

Figures

Frequently asked questions (FAQs)

Citations & References