Yamatake STG940 - User Manual

ST3000 Smart Transmitter Series 900
Electronic Differential Pressure/
Pressure Transmitter
Model : STD, STG, STA, STC,
STE, STR, STH and STU
User’s Manual
CM2-STJ100-2001
First issue: Apr. 1999 Rev.3: Oct. 2003

Summary

Safety

Explosion protected Models

Details on explosion-proof and dust-ignition-proof apparatus installations.

Complying with ATEX Directive

Information on intrinsic safety and flameproof enclosure compliance.

FM Intrinsically Safe System

Installation requirements for FM intrinsically safe systems.

Chapter 4: Installation

4-2: Mounting ST3000 Smart Transmitter

4-3: Piping ST3000 Smart Transmitter

4-4: Wiring ST 3000 Smart Transmitter

Instructions for wiring the ST3000 Smart Transmitter, including special models.

Chapter 5: Operation of the Transmitter

5-2: Setting Tag No. and Checking Specifications

Procedures for starting communications, setting tag numbers, and checking configurations.

5-3: Measurement with STD type

5-9: Zero-span Adjustment with Input Pressure Equivalent to Range

Procedure for adjusting zero and span based on input pressure.

5-10: Set Range Calculation for Liquid Level Measurement

5-12: External Zero and Span Adjustment (Option)

On-site zero/span adjustment procedures without using an SFC.

Chapter 6: Operation Using SFC

6-2: Functions of SFC

6-3: Before communicating using SFC

6-4: Check during operation

6-7: Display and Change Transmitter Setting

Guide to displaying and changing various transmitter settings via SFC.

6-8: Constant Current Source Mode

Chapter 7: Maintenance and Troubleshooting

7-1: Zero Adjustment

Detailed procedures for various zero adjustment methods.

7-2: Saving and Restoring Data

7-3: Disassembly and Assembly

7-4: Calibrating Set Range and Output Signals

Procedures for calibrating set range and output signals.

7-5: Erasing Calibrated Data

7-6: Troubleshooting

Guidance for checking operation, handling errors, and diagnostic messages.

Appendix - Supplement Manual for HART Communication Option

Section 1: Starting Communications

Section 2: Configuration

Section 4: Calibration

Information on calibrating transmitter analog output and measuring range.

Section 5: Service Setup Menu

Yamatake STG940 Specifications

General

Manufacturer	Yamatake
Model	STG940
Housing Material	Aluminum
Humidity	0 to 100% RH
Type	Transmitter
Measurement Type	Differential Pressure
Output Signal	4-20 mA
Process Temperature Limits	-40 to 120°C
Power Supply	10.5 to 42 V DC
Hazardous Area Approvals	ATEX, IECEx
Input	Differential Pressure
Operating Temperature	-40 to 85°C
Mounting	2-inch pipe