
527
HUMIDITY
HUMIDITY
9
WE MAKE IT EASY.
kele.com 888-397-5353 USA
March 2014
ORDERING INFORMATION
2% WATERPROOF / WASHDOWN HUMIDITY TRANSMITTER
EHRH
Accuracy
Humidity 2% (30% to 95%)
Temperature (EHRHT) ±0.5°F (±0.3°C)
Supply Voltage 24 VDC ±20% (loop powered)
Signal Output 4-20 mA
Maximum Output
Impedance 700Ω @ 24 VDC
Measurement Range
Humidity 0% to 100%
Temperature -20° to 140°F (-29° to 60°C)
Sensing Technology
Humidity Bulk polymer resistive
Temperature Platinum 1000Ω 385 RTD (EHRHT)
Type III 10 kΩ
Adjustments
Zero ±20%
Span ±10%
Sensitivity 0.1% RH
Operating Temperature -4° to 129°F (-20° to 54°C)
Enclosure Rating Epoxy-hardened waterproof case
Cover: Stainless steel
Wiring Terminations Flying leads
Weight 0.98 lb (0.44 kg)
Warranty 1 year
1.12
(2.86)
2.75
(6.98)
1.25
(3.17)
3.30
(8.25)
5.37
(13.64)
2.75
(6.98)
Front view
Side View
Top View
Shown with customer-
supplied wiring box
in
(cm)
DESCRIPTION
The Amphenol Advance Systems EHRH Series Humidity
Transmitters are specifically designed for washdown areas
and condensing atmospheres and offer thermistor or 4-20
mA temperature output. The EHRH Series measures relative
humidity with a 2% resistive sensor and can withstand 100%
saturation. It is made to be surface mounted to a single-gang
outlet box or mounted directly to the wall. The EHRH Series
are furnished with a waterproof case, connector, and stainless
steel cover with leads for termination inside the wall.
FEATURES
• Wash down waterproof design
• 4-20 mA output
• Easy one-point field calibration
• Rugged metal cover
• Temperature output: thermistor or 4-20 mA
Power Supply
G
A
I
N
O
F
F
S
E
T
4-20 mA
Signal
RH
4-20 mA
Temp
(red/white)
(white/brown)
(white/orange)
(green/yellow)
ZS
WIRING
MODEL DESCRIPTION
EHRH Waterproof/Washdown 2% RH transmitter
EHRHT Waterproof/Washdown 2% RH temperature
transmitter
APPLICATION
• Swimming pools
• Green houses
• Hospital suites
• Food processing
• Gymnasium
DIMENSIONS
SPECIFICATIONS
Power Supply
G
A
I
N
O
F
F
S
E
T
4-20 mA
Signal
(red/white)
(white/brown)
(white/brown)
(green/yellow)
ZS
Type 3
Thermistor
EHRH
EHRHT
RELATED PRODUCTS PAGE
DCPA-1.2 Power supply, 120 VAC IN to 24 VAC/24 VDC OUT 994
DCP-1.5-W Power supply, 24 VAC IN to 24 VDC OUT 995
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