Honeywell ST 800, ST 700 Installation Guide

ST 800/ST 700 SmartLine Pressure Transmitter

Quick Start Installation Guide

34-ST-25-36, Revision 10, June 2020

This document provides descriptions and procedures for the Quick Installation of Honeywell’s family of SmartLine Pressure Transmitters.

The SmartLine Pressure Transmitter is available in a variety of models for measuring Differential Pressure (DP), Gauge Pressure (GP), and Absolute Pressure (AP). For full details refer to the manuals listed below for protocols, human interface (HMI), Operation, Installation, Configuration, Calibration, Maintenance, Parts, Safety and Approvals etc. including options.

Copyrights, Notices and Trademarks

Copyright 2020 by Honeywell Revision 10 – June 2020

Trademarks

SFC, SmartLine, ST 800 and ST 700 are U.S. registered trademarks of Honeywell Inc.

HART® and FOUNDATION™ are trademarks of the FieldComm Group™

Documentation

To access complete documentation, including language variants, scan the QR code below using your smart phone/device or QR code scanner.

Go to the APP store for your free Smartphone QR scanner

Or you can follow the URL to access the online SmartLine HUB page.

The HUB page will contain direct links to open SmartLine product documentation.

URL

QR Code

https://hwll.co/SmartLineHUB

Table of Contents
Installation...................................................................................................................	1
Mounting the Transmitter ............................................................................................	1
Bracket Mounting........................................................................................................	1
Optional Mounting Bracket.........................................................................................	1
Existing Mounting Bracket..........................................................................................	2
Rotating Transmitter Housing....................................................................................	2
Leveling Transmitters with Small Absolute or Differential Pressure Spans ..........	2
Flange Mounting .........................................................................................................	2
Flush Mounting............................................................................................................	3
Remote Seal Mounting...............................................................................................	3
Conduit Entry Plugs and Adapters..............................................................................	3
Wiring Connections and Power Up .............................................................................	4
Wiring Variations.........................................................................................................	4
Explosion-Proof Conduit Seal .....................................................................................	4
Trim the Transmitter....................................................................................................	4
Procedure to Trim the Transmitter ............................................................................	4
Set the Jumpers For HART/DE...................................................................................	5
Setting Failsafe Direction and Write Protect Jumpers.............................................	5
Write Protect Jumper on Foundation Fieldbus (FF) ....................................................	5
Configuration Guide....................................................................................................	5
PRODUCT CERTIFICATIONS ...................................................................................	6
Hazardous Locations Certifications.............................................................................	7
Control Drawing ..........................................................................................................	9
Tables
Table 1 - Conduit Entry Plugs .....................................................................................	3
Table 2 - Conduit Adapters.........................................................................................	3
Table 3 - Jumper Settings...........................................................................................	5
Table 4 - Fieldbus Write Protect..................................................................................	5
Figures
Figure 1:Mounting Brackets ........................................................................................	1
Figure 2: Angle Mounting Bracket...............................................................................	1
Figure 3: LGP and LAP models ..................................................................................	2
Figure 4: Rotating Transmitter Housing ......................................................................	2
Figure 5: Using level to mount transmitter ..................................................................	2
Figure 6: Flange mounting..........................................................................................	2
Figure 7: Flush Mounting ............................................................................................	3
Figure 8: Remote Seal mounting ................................................................................	3
Figure 9: Electronic Housing Conduit Entries .............................................................	3
Figure 10: Two-wire power/current loop......................................................................	4
Figure 11: Terminal Block and Grounding Screw location ..........................................	4
Figure 12: Jumper Location HART/DE.......................................................................	5

Installation

Evaluate the site selected for the Transmitter installation with respect to the process system design specifications and Honeywell’s published performance characteristics for your particular model.

Temperature extremes can affect display quality. The display can become unreadable at temperature extremes; however, this is only a temporary condition. The display will again be readable when temperatures return to within operable limits.

Mounting the Transmitter

Transmitter models, except flush mounts and those with integral flanges, can be attached to a two-inch (50 millimeter) vertical or horizontal pipe using Honeywell’s optional angle or flat mounting bracket; alternately you can use your own bracket. Flush-mount models are attached directly to a process pipe or tank by a one-inch weld nipple. Models with integral flanges are supported by the flange connection.

Typical Bracket mounted and Flange Mounted Installations

Bracket Mounting

•Optional mounting bracket, see Figure 2

•Existing mounting bracket, see Figure 3

•Rotate the transmitter housing, see Figure 4

Level a transmitter with small absolute or differential pressure spans, see Figure 5

Optional Mounting Bracket

Position the bracket on a 2-inch (50.8mm) and install “U” bolt around pipe and through holes in bracket. Secure with nuts and lock washers provided.

Figure 2 Example - Angle mounting bracket secured to horizontal or vertical pipe.

Figure 2: Angle Mounting Bracket

Figure 1:Mounting Brackets

Quick Start Installation Guide

1

Existing Mounting Bracket

Align appropriate mounting holes in transmitter with holes in bracket and secure with bolts and washers provided.

Note: If the meter body is hexagonal, you must use the additional bracket supplied. If meter body is round, discard the bracket.

Example – LGP model transmitter mounted to optional angle mounting bracket.

If Transmitter is….	Then….
DP, Dual Head GP, Dual Head AP	Use alternate mounting holes in end of
and DP Remote Seals.	heads.
In-line GP and AP (LGP model) or	Use smaller “U” bolt provided to attach
GP/AP Remote Seal	meter body to bracket. See Figure 3.

Figure 3: LGP and LAP models

Rotating Transmitter Housing

Loosen set screw on outside neck of transmitter one full turn. Rotate Transmitter housing in maximum of 180 degree increment in left or right direction from center to position you require and tighten set screw (1.46 to 1.68Nm/13 to 15lb-in).

Figure 4 Example – Rotating Transmitter Housing.

Figure 4: Rotating Transmitter Housing

Leveling Transmitters with Small Absolute or Differential Pressure Spans

Mounting position of these transmitters is critical due to the smaller transmitter spans.

To minimize these positional effects on calibration (zero shift), take the appropriate mounting precautions that follow for the given transmitter model.

See Figure 5 for suggestions on how to level the transmitter using a spirit balance. To perform a Zero Trim after leveling, refer to Trim the Transmitter on page 4.

Figure 5: Using level to mount transmitter

For model STA840, STA822, STA740 or STA722 transmitters, you must ensure that the transmitter is vertical when mounting it. You do this by leveling the transmitter side-to-side and front-to-back.

Mount transmitter vertically to assure best accuracy. Position the spirit balance on the pressure connection surface of AP body.

Flange Mounting

To mount a flange mounted transmitter model, bolt the transmitter’s flange to the flange pipe on the wall of the tank.

On insulated tanks, remove enough insulation to accommodate the flange extension.

It is the End User’s responsibility to provide a flange gasket and mounting hardware that are suitable for the transmitter’s service condition.

To prevent degradation of performance in Flush-Mounted Flanged Transmitters, exercise care to ensure that the internal diameter of the flange gasket does not obstruct the sensing diaphragm.

To prevent degradation of performance in Extended Mount Flanged Transmitters, ensure that there is sufficient clearance in front of the sensing diaphragm body.

Figure 6: Flange mounting

Quick Start Installation Guide

2

Flush Mounting

To mount a flush mounted transmitter model, cut a hole for a 1-inch standard pipe in the tank or pipe where the transmitter is to be mounted. See Figure 7.

Weld the 1-inch mounting sleeve to the wall of the tank or to the hole cut on the pipe. Insert the meter body of the transmitter into the mounting sleeve and secure with the locking bolt. Tighten the bolt to a torque of 6.4Nm ±0.30Nm [4.7ft.-lbs. ±0.2ft.-lbs.]

Once the transmitter is mounted, the transmitter housing can be rotated to the desired position. See Figure 7.

Figure 7: Flush Mounting

Conduit Entry Plugs and Adapters

Procedures

It is the User/Installer’s responsibility to install the Transmitters in accordance with national and local code requirements. Conduit entry plugs and adapters shall be suitable for the environment, shall be certified for the hazardous location when required and acceptable to the authority having jurisdiction for the plant.

CONDUIT ENTRY PRECAUTIONARY NOTICE

THE CONDUIT/CABLE GLAND ENTRIES OF THIS PRODUCT ARE SUPPLIED WITH PLASTIC DUST CAPS WHICH ARE NOT TO BE USED IN SERVICE.

IT IS THE USER’S RESPONSIBILITY TO REPLACE THE DUST CAPS WITH CABLE GLANDS, ADAPTORS AND/OR BLANKING PLUGS WHICH ARE SUITABLE FOR THE ENVIRONMENT INTO WHICH THIS PRODUCT WILL BE INSTALLED. THIS INCLUDES ENSURING COMPLIANCE WITH HAZARDOUS LOCATION REQUIREMENTS AND REQUIREMENTS OF OTHER GOVERNING AUTHORITIES AS APPLICABLE.

Use the following procedures for installation:

	Table 1 - Conduit Entry Plugs
Step	Action

1Remove the protective plastic cap from the threaded conduit entry.

2To ensure the environmental ingress protection rating on tapered threads (NPT), a non-hardening thread sealant may be used.

3Thread the appropriate size conduit plug (M20 or ½” NPT) into the conduit entry opening. Do not install conduit entry plugs in conduit entry openings if adapters or reducers will be used.

4Tighten adapters according to the following table.

	Description	Tool		Torque
	M20 Conduit Entry	10mm Hex Wrench	32Nm		24Lb-ft
	½” NPT Conduit	10mm Hex Wrench	32Nm		24Lb-ft
	Entry

Remote Seal Mounting

Mount the transmitter at a remote distance determined by length of capillary tubing.

Note: The combination of tank vacuum and high pressure capillary head effect should not exceed 9psi (300mm Hg) absolute.

On insulated tanks, remove enough insulation to accommodate the mounting sleeve. Figure 8 Example – Typical Remote Seal Transmitter installation.

Note: For Sanitary 3-A installations, only mount the transmitter outside of the NonProduct Contact area where incidental contact with the process material is unlikely, use a minimum capillary length of 1.5m (5ft.)

			Figure 8: Remote Seal mounting
			Table 2 - Conduit Adapters
	Step			Action
	1		Remove the protective plastic cap from the threaded conduit entry.
	2		To ensure the environmental ingress rating on tapered threads (NPT),
			a non-hardening thread sealant may be used.
	3		Thread the appropriate size adapter (M20 or ½ NPT) into the conduit
			entry opening
	4		Tighten adapters according to the following table.
			Description	Tool		Torque
			½ to ¾ NPT Adapter	1 ¼” Wrench		32Nm	24Lb-ft

Figure 9: Electronic Housing Conduit Entries

Note. No plugs come installed in the housings. All housings come with temporary plastic dust protectors (red) installed and are not certified for use in any installation

Quick Start Installation Guide

3