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Model 902 Humidity cum Temperature Transmitter
 

Introduction

Pantech Instrument’s Model 902 is an extended version to its predecessor model 901. Model 902 is a Humidity Transmitter + RTD sensing element. The Sensing + Transmitter circuits not only senses the %RH value , but also does convert it into 2-wire 4-20 mA DC signal, for use of the higher instrumentation or controlling layers. The load capacity of this 4-20 mA DC signal is 600 ohms. Model 902 series is often ideally suited for low drain, battery operated systems. The basic HUMIDITY sensor inside the probe gives quality RH ( Relative humidity ) sensing performance in a competitively priced package. The RH sensor is a laser trimmed, thermoset polymer capacitive sensing element with on-chip integrated signal conditioning. The sensing element’s and transmitter PCB’s multilayer construction provides excellent resistance to most application hazards such as wetting, dust, dirt, oils and common environmental chemicals. For TEMPERATURE measurement, a miniature but high quality RTD is installed inside the basic sensor. The model is a fully configurable one, microprocessor based type. The model incorporates low drift operational amplifiers and industrial grade componenets. Burn in of each module ensures a long trouble free operation

 
Specifications

Input

Inbuilt Humidity Sensor
Inbuilt RTD element

Accuracy

+/- 0.1% of span

Analog output load capability

800W maximum

Output accuracy

+/- 0.1% of span

Enclosures

Weatherproof, Flameproof and all other standard types

Dimensions

Optimum

 

Output

4-20 mA DC in 2-wire loop ( Humidity signal )
RTD signal ( Temperature )

Ambient temperature

0 – 50° C.

Humidity

Upto 100% RH (non-condensing)

Storage temperature

0 – 70° C.

Mounting

Head / Panel / Wall / Field

Power supply

24 V DC ( 22.5 to 28 ) V DC
from two wire loop

 

Ordering Information

Please confirm the availability of the model by cross checking the table mentioned on the backside.

Basic Model No.
(Specified by first 3 digits)

902 - Universal Temp. Transm.

 






Enclosure / Mounting

( letter following 3 digits)

P - Weatherproof - Panel
W - Weatherproof - Wall
F - Flame proof – Wall / Field
I - IP65 grades – Wall / Field
S - Specials

 
Connection / Terminal details
Signal voltage specifications :

 

Ordering Information


Basic Model No.
(Specified by first 3 digits)

902 - Humidity cum Temperature sensor

 





Enclosure / Mounting

(Specified by letter following 3 digits)
P - Weatherproof - Panel
W - Weatherproof - Wall
F - Flame proof – Wall / Field
I - IP65 grades – Wall / Field
S - Specials
 
 

Made in India By:


PANTECH INSTRUMENTS,

102, Shailja Complex II,

Akota – Padra Road,

Nr. R. C. Patel Ind. Estate,

Vadodara – 390 020.

Telefax: (265) 2331380/2303080.

Mobile: +9198240 16466/ +99242 10722