ASR133-S00/SR3S0

The Yokogawa ASR133-S00/SR3S0 is an 8-channel RTD/POT input module with a built-in barrier and isolated input circuits. It acquires resistance signals from resistance temperature detectors (RTDs) and potentiometers for processing by a Yokogawa control system. The specified configuration includes an ATSR3S-0 pressure clamp terminal connection for field wiring.

RTD and Potentiometer Signal Acquisition

The ASR133 accepts resistance-based field signals for temperature measurement and potentiometer position or resistance measurement. Its eight isolated input channels support the following sensor types:

• Platinum RTDs: Pt50, Pt100, Pt200, Pt500 and Pt1000.
• Nickel RTDs: Ni100, Ni120 and Ni200.
• Potentiometers: 0 to 10 kOhm.

RTD measurements use the resistance-temperature characteristics of the selected sensor to obtain temperature values. Potentiometer inputs provide resistance information that can represent the position of a connected measuring device. The supported sensor type and input configuration must be selected according to the field instrument.

Built-In Barrier and Input Isolation

The built-in barrier separates the field-side measurement circuits from the system-side interface. This arrangement is intended for applications requiring isolated resistance-signal acquisition. The module's isolation and barrier characteristics should be considered when checking field wiring and hazardous-area installation requirements.

Terminal Connection

The /SR3S0 option identifies the pressure clamp terminal configuration associated with the ASR133 module. Yokogawa documentation identifies the corresponding terminal model as ATSR3S-0. The pressure clamp arrangement provides the field connection for the RTD and potentiometer input signals.

Technical Specifications

Parameter	Specification
Model	ASR133-S00/SR3S0
Brand	Yokogawa
Product Type	RTD/POT Input Module
Input Channels	8
Input Isolation	Isolated
Barrier	Built-in barrier
RTD Types	Pt50, Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni200
Potentiometer Input	0 to 10 kOhm
Terminal Connection	Pressure clamp terminal
Terminal Model	ATSR3S-0
Operating Temperature	-20 to 70 deg C

Frequently Asked Questions

Q: Which RTD sensor types are supported by the ASR133-S00/SR3S0?

A: It supports five platinum RTD types (Pt50, Pt100, Pt200, Pt500 and Pt1000) and three nickel RTD types (Ni100, Ni120 and Ni200).

Q: What is the function of the SR3S0 configuration?

A: /SR3S0 specifies the pressure clamp terminal option for RTD/POT signal connections. The corresponding Yokogawa terminal model is ATSR3S-0.

Q: Can this module accept potentiometer signals?

A: Yes. The module supports potentiometer inputs over a resistance range of 0 to 10 kOhm, in addition to the specified RTD sensor types.

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