Setra AccuSense AXD Operating Manual

Model AXD

Operating Instructions

1.0 Introduction

Every sensor in the AXD product family has been tested and calibrated before shipment. Setra Systems AXD product family senses gauge, compound, vacuum gauge and converts this pressure difference to a proportional high level analog output. Three standard excitation and output versions are offered:

Excitation Output Output codes

9 to 28 VDC 4-20 mA reverse excitation protection 11 9 to 30 VDC e.g. 0.5 to 5.5 VDC - (Reverse excitation protection) 24, 2E, et.al

4.9 to 8.1 VDC Reverse excitation protection 0.5 to 4.5 VDC 45

2.0 Mechanical installation

2.1 Media compatibility

The transducers in the AXD product family are offered with two different types of wetted materials. The AXD1 is made with 17-4PH stainless steel and the AXDH is made with 316 stainless steel. Prior

to use in your application conrm that your media is compatible with the wetted materials of the

ordered sensor.

2.2 Environment

The operating temperature limits of the AXD are -40° to +257°F (-40 to +125°C) on most electrical connection options (except where noted). The compensated temperature range is -4 to +185°F (-20 to +85°C).

2.3 Pressure ttings

Typically, standard pipe ttings and procedures should be used. However, for pressure ranges in

excess of 500 psig, we suggest the use of a sealant such as Locite Hydraulic Sealant. Excessive

torquing of metal ttings may cause a slight zero shift. The use of plastic ttings typically results in no noticeable zero shift. Torquing does not appreciably affect linearity or sensitivity.

2.4 Venting

Because the reference pressure in a sealed gauge transducer will vary due to changes in temperature and will affect overall accuracy (especially in units of less than 200 psig range), all transducers in the AXD product family are available in both vented or sealed pressure types.

Vented units are ordered as gauge pressure type (e.g. PSIG) units. Sealed units are ordered as sealed gauge type (e.g. PSIS) range units. The AXD gauge transducers are vented through electrical termination as shown in table below.

Electrical termination Venting

Cable (XX) Venting through cable 3-pin packard (P1) Venting through porous lter protected by loose o-ring M12, 4-pin (M4) Venting through connector Terminal strip/conduit ("A1") Venting through porous lter on terminal strip

3.0 Electrical installation

The AXD product family is available with four electrical terminations:

• (2ft/0.5m, 6ft./2m, 12ft/4m, 25ft/8m) cable

• M12-4 PIN connector

• 3-pin packard connector

• Terminal connection w/ conduit adapter, 1/2 inch

3.1 Voltage and current output units

Red + Excitation

Black - Excitation

Monitor or

Control Device

Green + Out

White

- Out

Shield

MATERIAL

SCALE

ENGR

DATE

Boxborough, MA, USA

MATERIAL

1:1

SAINT HILAIRE

1-24-19

DRAWN BY

PROPRIETARY INFORMATION OF SETRA SYSTEMS, INC., ALL

RIGHTS RESERVED. ALL UNAUTHORIZED REPRODUCTION,

USE AND TRANSMISSION OF THIS DRAWING AND

INFORMATION IT CONTAINS ARE STRICTLY PROHIBITED.

THIS DRAWING IS SUBJECT TO RETURN TO SETRA SYSTEMS, INC.,

UPON ITS REQUEST.

The Model AXD (voltage output) transducer is a 3-wire voltage device. It is operable in a 5000Ω load or greater. The wires for the individual conductors is as follows:

Current output units

The Model AXD (current output) transducer is a true 2-wire, 4-20 mA current output device and delivers rated current into any external load of 0-800 ohms. The 4-20 mA units are designed to have current flow in one direction only - Please observe polarity. We suggest that the electrical cable shield be connected to the system’s loop circuit ground to improve electrical noise rejection. The electrical connection is as follows:

3.2 Output wiring schematics

Voltage

Model AXD Setra transducer (Voltage Output)

CAUTION: Unit is reverse excitation protected. However, do not apply power to output lead as this could cause permanent damage.

+Out

-Out

Current output

Model AXD

Setra transducer

(4-20 mA)

+ Power supply

_ _

The AXD has a 2-wire cable, where red is positive and black is negative.

CAUTION: Reverse excitation will not cause damage to the unit unless voltage applied is above 50 VDC. However, the unit will not function if reverse wired.

Load

(monitor)

Model AXD: In case of electrical noise pickup we suggest connecting a 22 μF non-polar electrolytic

capacitor rated 50V between (+Exc and -Exc) terminals of power supply to improve noise rejection.

3.3 Electrical termination wiring instructions

Cable version ("XX")

Red +Exc +Exc/supply

Green +Out N/C

Black -Exc/common -Exc/return White N/C /no connect N/C

Shield Earth ground/system ground Earth ground/system ground

3-pin packard connector ("P1")

Type: P2S series 150

Voltage Current

Vent ring

(Hydrophobic lter)

Voltage Current

A –Exc/common –Exc/return B +Exc +Exc/supply C +Out N/C

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