CTS 420 Series

CTS 420 Series
Product Description

CTS 420 Series

Position Transmitter System

Description :
The CTS 420 is a 2-wire current loop position transmitter system especially suited to valve position indication and other position indication in process industries. The system consists of an LVDT position sensor with matching electronics to provide 4-20 mA output into 2-wire current loops. The linear position sensors are available in six ranges covering 0- 0.25" to 0-10.0". The CTS 420 System is particularly well suited for sensing valve position of stem-type valves because the sensor can be coupled directly to the valve's operating shaft for exceptional reliability and accuracy. Of special interest to the process industries is that the system's inductance and capacitance are well below the levels set for intrinsic safety requirements.



HCT 250

HCT 500

HCT 1000

HCT 2000

HCT 5000

HCT 10000

Stroke range

0.25 [6.35]

0.5 [12.7]

1 [25.4]

2 [50.8]

5 [127]

10 [254]

Sensitivity, mA/inch [mA/mm]

64 [2.52]

32 [1.26]

16 [0.63]

8 [0.315]

3.2 [0.126]

1.6 [0.063]

Non-linearity, % of FR max.



Temp. coefficient of sensitivity

0.022%/°F [0.04%/°C]

Loop supply voltage

+10.5 to +28VDC


4 to 20mA (Output increases when the core is displaced from null towards the connector)

Output at null position

12mA (null position is defined as the mid-stroke position)

Max loop resistance

540 ohms @ +24VDC (see loop resistance chart below)

Output noise and ripple

25 µA, peak-to-peak maximum


0.05% of FSO, after 30 minute warm up

Frequency response

50Hz @ -3db


Operating temperature range

-13 °F to +185 °F [-25 °C to +85 °C]

Survival temperature

-65°F to +250°F [-55°C to 125°C]

Shock survival

250 g (11ms half-sine)

Vibration tolerance

10 g up to 2kHz

Housing material

AISI 400 Series stainless steel

Electrical connector

6-pin MS type connector (MIL-C-5015)

NEMA IEC 60529 rating

IP68 to 1,000 PSI [70 bars] with use of proper mating connector plug

Contact Us

A-401, Kailash Industrial Complex, Behind Godrej Colony, Vikroli (W), Mumbai, Maharashtra, 400079, India