Wahl DST500-FM User Manual

Intrinsically Safe

- S

écurité Intrinsèqu

DST500-FM

Digi-Stem

 Thermometer



User Manual

IS/CL I, II, III / DIV 1 / GP ABCDEFG;
T4A Ta=70°C; Type 4X
CL I, II, III / DIV 2 / GP ABCDEFG;
T4A Ta=70°C; Type 4X

Do not revise without prior FM approval

WD1094 Rev A
01/31/14

e

Wahl Instruments, Inc.

234 Old Weaverville Road

Asheville, NC 28804

Toll Free 800-421-2853

Phone [phone]

Fax [phone]

www.palmerwahl.com

DST500-FM USER MANUAL

WARRANTY & CALIBRATION

Index

1 Introduction________________________________________________________ 3

2 Application and Key Features _________________________________________ 3

3 Factory Mutual Approval _____________________________________________ 3

4 Installation ________________________________________________________ 5

5 Battery Installation/Replacement _______________________________________ 7

6 Operation _________________________________________________________ 8

7 Calibration ________________________________________________________ 9

8 Installation Control Drawing _________________________________________ 11

9 Specifications _____________________________________________________ 12

10 Service ___________________________________________________________ 12

Registration is fast and easy. In about a minute you
can have your product automatically registered for
Warranty Protection and our Calibration Reminder
service. Let Palmer Wahl help you protect your
investment, and maintain product accuracy and
compliance with ISO and other quality standards.
Questions? Call Customer Service
at 1-800-421-2853 or 828-658-3131
Or email: [e-mail]

REGISTRATION at

www.palmerwahl.com/register

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DST500-FM USER MANUAL

1 Introduction

The following symbols are used in this manual.

Please adhere to all ! Warnings and Cautions! in this manual.

! Warning – identifies conditions and actions that may be dangerous to the
user.

Caution! – identifies conditions and actions that may cause damage to the
product or equipment.

Note: - provides additional explanatory information.

2 Application and Key Features

The Wahl DST500-FM is designed for temperature monitoring applications in
Classified Hazardous Locations, where a high degree of accuracy and ease of
use are desired. To achieve this objective the DST500-FM incorporates the
following features:

• High reliability, 4-wire, 100 ohm, .00385Ω/Ω/°C, thin-film platinum RTD

sensor per DIN EN 60751, Class A.

• Hazardous Location approval by FM Approvals as defined in Section 3 of this

manual.

• High accuracy 24-bit Delta-Sigma Analog/Digital Converter.

• Probe Error checking: Checks for open wire, open sensor, shorted sensor,

incorrect wiring.

• Programmable RØ: Allows programming of the sensing probes specific RØ

value into the meter for accurate temperature calibration.

3 Factory Mutual Approval

3.1 The DST500-FM when used with the Wahl p/n DSA3060 battery(Tadiran
model TL-2200), carries hazardous location approval and is suitable for use
in the following locations.

• Intrinsically Safe; Class I, II and III; Division 1; Groups ABCDEFG;
Temperature Class T4A Ta = 70°C; Indoor and Outdoor (Type 4X)
Hazardous Locations.

• Class I, II, III; Division 2; Groups ABCDEFG; Temperature Class T4A Ta =
70°C; Indoor and Outdoor (Type 4X) Hazardous Locations

• All Non-hazardous Locations

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DST500-FM USER MANUAL

3.2 ! English Warnings

! Warning – Please adhere to the following warnings:

! Warning - Battery MUST be changed in an Unclassified Location
only.

! Warning – Electrostatic Charging Hazard

The DST500-FM enclosure includes 2 non-metallic components,
consisting of the polycarbonate window and the blue colored
polycarbonate H-frame, which thereby increase the risk of electrostatic
charge buildup. The following precautions may be used to reduce the risk
of static discharge.

• Do not contact the viewing window or the blue H-frame when a
flammable or combustible atmosphere is present.

• Coat the window and H-frame using a topical anti-static coating
such as Desco Industries part number 10415 or equivalent, re­coating as needed.

• Do not use in the presence of high electro-magnetic fields.

• Clean only with damp cloth using clean water.

• Ensure either the enclosure or the probe is grounded to building or

earth ground.

! Warning – Substitution of the following components may impair
suitability for Division 2:

• Battery – Wahl P/N DSA3060; Manufacturer – Tadiran, model TL-2200

3.3 ! Avertissements Français

! Avertissement - S'il vous plaît respecter les avertissements suivants:

! Avertissement - La batterie doit être changée en dehors d’une zone
classifiée.

! Avertissement - Risque de charge électrostatique

Le boîtier DST500-FM comprend 2 composants non métalliques en
polycarbonate, la fenêtre et le cadre bleu en forme de H, qui augmentent le
risque d'accumulation de charges électrostatiques. Les précautions suivantes
sont à suivre pour réduire le risque de décharge électrostatique.

• Ne pas toucher la fenêtre de visualisation ou le cadre bleu en forme de H

en présence d'une atmosphère inflammable ou combustible.

• recouvrir la fenêtre et le cadre en utilisant un revêtement antistatique tel
que du Desco Industrie référence 10415 ou équivalent, recouvrir de nouveau si
besoin.

• Ne pas utiliser en présence de forts champs électromagnétiques.

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