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Series TTE Explosion-Proof RTD Temperature Transmitter

Series TTE Explosion-Proof RTD Temperature Transmitter

Series TTW Weatherproof Immersion Temperature Transmitter

Series TTW Weatherproof Immersion Temperature Transmitter

Series HHT Hazardous Area Humidity/Temperature Transmitter

Intrinsically Safe or Explosion-Proof Models
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The Series HHT Hazardous Area Humidity/Temperature Transmitter takes accurate measurements in the harshest of environments. The explosion-proof model is offered with 4 to 20 mA output for humidity only. The intrinsically safe version is offered with 4 to 20 mA output for humidity and temperature, and do require an intrinsically safe barrier to meet hazardous area approvals.

Product Applications

  • Process monitoring
  • Offshore HVAC monitoring
  • Dust and grain handling
Starting at $1,304.15
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Grouped product items
Model Description Availability* Qty Price
HHT-EU-LCD Explosion-proof humidity transmitter with LCD display. 1-3 days*
$1,827.25
HHT-IT Intrinsically safe humidity/temperature transmitter. 1-3 days*
$1,364.45
HHT-IT-LCD Intrinsically safe humidity/temperature transmitter with LCD display. 1-3 days*
$1,476.75

Specifications

Relative Humidity Range:
0 to 100% RH.
Temperature Range:
-40 to 140°F (-40 to 60°C).
Accuracy:
±2% 10 to 90% RH, ±0.9°F at 72°F (±0.3°C at 25°C).
Hysteresis:
±1%.
Repeatability:
±0.1% typical.
Temperature Limits:
-40 to 140°F (-40 to 60°C).
Storage Temperature:
-40 to 176°F (-40 to 80°C).
Compensated Temperature:
-40 to 140°F (-40 to 60°C).
Power Requirements:
For intrinsically safe models HHT-IX, 9.5 to 28 VDC. For explosion-proof models HHT-EX, 16.5 to 28 VDC.
Output Signal:
4 to 20 mA, 2 channels for humidity/temperature models (loop power on RH).
Response Time:
15 s.
Electrical Connections:
Screw terminal block.
Conduit Connection:
1/2" female NPT.
Drift:
<1% RH/year.
RH Sensor:
Capacitance polymer.
Temperature Sensor:
Solid state band gap.
Housing Material:
Aluminum.
Display:
Optional 2 line alpha numeric, 8 characters/line. Temperature display is °F/°C selectable.
Display Resolution:
RH: 0.1%; Temperature: 0.1°F (0.1°C).
Weight:
2 lb 8 oz (1134 g).
Enclosure Rating:
NEMA 4X (IP66). Models HHT-EX: FM Explosion-proof, Class I Div. 1 Group B, C, D, Class II Div. 1 Group E, F, G, Class III Div. 1; Models HHT-IX: FM Intrinsically Safe, Class I Div. 1 Group A, B, C, D, Class II Div. 1 Group E, F, G, Class III Div. 1 T4.
Compliance:
FM, CE.

Features

  • FM approved explosion-proof and intrinsically safe models
  • Integral LCD option
  • Dual temperature and relative humidity output models

Product Literature

Manuals

Catalog Pages

Approvals

Drawings

Model Chart

EXAMPLE HHT I T LCD Series HHT-IT-LCD Humidity/Temperature Transmitter, FM intrinsically safe, 1/2" male NPT humidity/temperature with LCD Display
SERIES HHT       HUMIDITY/TEMP TRANSMITTER
APPROVAL   A
E
I		     ATEX/IECEx FLAMEPROOF (N/A)
FM EXPLOSION PROOF
FM INTRINSICALLY SAFE
PROCESS CONNECTION AND OUTPUTS     B
E
T
U		   1/2" MALE BSPT HUMIDITY
1/2" MALE BSPT HUMIDITY/TEMP (I ONLY)
1/2" MALE NPT HUMIDITY/TEMP (I ONLY)
1/2" MALE NPT HUMIDITY
OPTION      

C5
LCD
M20
FC

C5-M HOUSING PAINT SPECIFICATION
LCD DISPLAY
M20 CONDUIT HOUSING
FACTORY CALIBRATION CERTIFICATE
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Model Description Availability* Price
A-287 Mounting bracket for pipe or surface mounting (includes bracket and two 2" U-bolts) 1-3 days*
$59.85
A-450 Replacement sintered filter for Series HHT 1-3 days*
$10.85
A-451 Replacement 2% sensor for Series HHT (for models built after April 2019). 1-3 days*
$105.00
KFD0-SCS-EX1.55 Loop powered galvanic barrier for use with intrinsically safe transmitters. 1-3 days*
$726.25