General; Introduction; Parts; Safety - Wahl TM612 User Manual

A. G ENERAL
A.1

Introduction

The TM612 is a portable RTD thermometer (compliant with EC standards). It is especially designed for
calibration and maintenance. It is used to measure resistance values or temperatures both on site and in the
laboratory.
The TM612 features a large number of related functions which extend its range of application:
•
Storage of acquisitions and display in the form of tables or trend curves.
•
Use of calibrated sensors with their coefficients of correction
A range of improvements facilitates its operation:
•
Rapid access to all functions.
•
Intuitive user interface.
•
160x160 graphic display
•
Connection via 4 mm safety plugs or a miniature flat plug.
•
Power supply via 4 AA batteries or rechargeable batteries with rapid internal charger (Option).
The device is housed in an ABS case with a rubber boot.
A.2

Parts

General characteristics:
•
Portable device powered by 4 AA batteries (pack of Ni-MH storage batteries, 1.7 Ah optional).
•
Hand strap for carrying and use on-site
•
Graphic liquid crystal display: 160 x 160 pixels.
•
Choice of language used for messages and programming of functions, gauges and parameters via
6-key keyboard + 1 navigator.
•
Backlit display accessible via a keyboard key, with the possibility of automatic black-out after a
specific programmable period of inactivity.
•
Appearance: ABS case (with rubber boot).
•
Dimensions: 6.18 x 3.35 x 1.77 inches (157 x 85 x 45 mm) (without rubber boot).
•
Weight: 10.8 oz. (306 g) without rubber boot.
•
IP54 rating in compliance with standard EN 60529
Accessories:
Part No.
12436-01 Rechargeable battery pack with charger
12436-04 4 pin RTD connector (mating plug) for TM612 and TM630 (and TC622)
12436-05 Carrying Case, hard plastic
12436-06 Rubber boot (replacement)
12436-07 Cable, USB 2.0A to Mini USB Type B, 5 pin, 6 ft. length
12436-32 4 pin RTD connector (mating plug) for TM612A and TM630A (and TC622A)
A.3

Safety

A.3.1

Compliance with safety standards

The device complies with the applicable standards in force on the subject of electrical safety (EN 61010) as
well as on the electromagnetic compatibility of the electrical measuring instruments (EMC: EN61326).
These instructions for use contain information and warnings which must be observed by the user to protect
the latter against the dangers of electricity, to ensure the safe operation of the device and to protect it against
any mishandling which could damage or compromise the safety of use of the device.
TM612
Name
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TM612
A.3.2

Environmental conditions

In accordance with publication CEI 359: operating category I.
Range of application of standards from 0 to 2,200 m.
Reference temperature range: 23°C ± 5°C, relative humidity: 45 % to 75 %.
Nominal operating range: -10°C to +50°C, relative humidity: 20 % to 80 % non-condensing.
Operating range limit: -15°C to +55°C, relative humidity: 10 % to 80 % (70 % at 55°C).
Storage and transport temperature range limit: - 30°C to + 60°C (without the batteries).
A.3.3

Worn devices

Worn electrical devices can pollute the environment. We recommend you refrain from disposing of this device
in an ordinary waste bin, but rather that you use the recycling circuits available locally.
A.3.4

Device destruction procedure

Opening the device: unscrew the screw on the battery compartment, followed by the 5 screws securing the 2
shells.
Separate the 2 shells. Separate the PCB from the upper shell.
With regard to the batteries, you will find them in the battery compartment (see commissioning chapter).
In the case of the pack of batteries, there are 2 contaminants: NI-MH (Nickel-Metal Hydride) batteries and a
PCB. Separate these 2 items.
A.3.5

Instructions

The device was designed to operate safely if the instructions provided in the accompanying documents are
followed. Any other use may jeopardize the safety of the operator. Any use other than those specified in the
instructions is therefore dangerous and forbidden.
A.3.6

Making measurements

The measuring leads and wires must be in good condition and must be replaced if their insulation appears
faulty (insulating material cut, burned, etc).
Never exceed the protection value limits indicated in the specifications.
Before changing function, disconnect the measuring wires from the external circuit. When voltage
measurements are being made, even weak ones, keep in mind that the circuits may contain a dangerous
voltage for the operator when referenced to ground.
Do not make any measurements when the device is linked up to another device using the USB link or when
the batteries are being charged.
A.3.7

Defects and abnormal stresses

If you believe the device's protection may have been compromised, switch off the device and prevent it from
being switched back on unexpectedly.
The protection may be impaired in the following cases, for example:
The device is visibly worn.
The device is no longer able to make precise measurements.
The device was stored in unfavorable conditions.
The device has undergone severe stresses during transport.
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