testo 735 User guide

testo 735

Temperature measuring instrument

Instruction manual en

			Contents
	General notes ......................................................		2
1.	Safety instructions ................................................		4
2.	Intended purpose ................................................		5
3.	Product description ..............................................		6
	3.1	Display and control elements ..........................................	6
	3.2	Interfaces ........................................................................	8
	3.3	Voltage supply ................................................................	8
4.	Commissioning ....................................................		9
5.	Operation		10
	5.1	Connecting a probe ......................................................	10
	5.2	Switching on/off ............................................................	10
	5.3	Display ..................................................................light	11
6.	Setting the ........................................instrument		12
	6.1	Configuration ......................................................menu	12
		6.1.1 ..............................................................................	12
		6.1.2 ..............................................................................	13
		6.1.3 ............................................................................	13
		6.1.4 ..............................................................................	15
		6.1.5 ........................................................................	16
	6.2	Main menu ....................................................................	17
		6.2.1 ......................................................	18
		6.2.2 ....................................Measuring program (735-2 only)	19
		6.2.3 ..............................................................................	20
		6.2.5 ..............................................................................	20
7.	Measuring ..........................................................		22
8.	Care and maintenance ......................................		24
9.	Questions ......................................and answers		25
10.	Technical data ....................................................		26
11.	Accessories ................................../ spare parts		27

2 General notes

General notes

This chapter provides important advice on using this documentation.

The documentation contains information that must be applied if the product is to be used safely and efficiently.

Please read this documentation through carefully and familiarise yourself with the operation of the product before putting it to use. Keep this document to hand so that you can refer to it when necessary.

Identification

Representation Meaning				Comments
			Warning advice: Warning!	Read warning advice carefully and take the precautionary measures
				indicated! Serious physical injury could occur if you do not take the
				precautionary measures indicated.
			Warning advice: Caution!	Read warning advice carefully and take the precautionary measures
				indicated! Slight physical injury or damage to equipment could occur
				if you do not take the precautionary measures indicated.
			Note	Offers helpful tips and information.
, 1, 2			Objective	Denotes the objective that is to be achieved via the steps described.
				Where steps are numbered, you must always follow the order given!
			Condition	A condition that must be met if an action is to be carried out as
				described.
, 1, 2, ...			Step	Carry out steps. Where steps are numbered, you must always follow
				the order given!
Text			Display text	Text appears on the instrument display.
	Button		Control button	Press the button.
			Function button	Press the button.
-			Result	Denotes the result of a previous step.
			Cross-reference	Refers to more extensive or detailed information.

General notes 3

Short form

This document uses a short form for describing operating steps (e.g. calling up a function).

Example: Calling up the “Instrument data” function

Short form: Device			OK	Inst.data			OK	.
		(1)	(2)		(3)		(4)
Steps required:
1	Press	/	to select the Device function.
2	Confirm selection with					.
					OK
3	Press	/	to select the Inst.data function.
4	Confirm selection with					.
					OK

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4 1. Safety instructions

1.Safety instructions

This chapter gives general rules which must be followed and observed if the product is to be handled safely.

Avoid personal injury/damage to equipment

Do not use the measuring instrument and probes to measure on or near live parts.

Never store the measuring instrument/measuring cells together with solvents and do not use any desiccants.

Product safety/preserving warranty claims

Operate the measuring instrument only within the parameters specified in the Technical data.

Always use the measuring instrument properly and for its intended purpose. Do not use force.

Do not expose handles and feed lines to temperatures in excess of 70 °C unless they are expressly permitted for higher temperatures. Temperatures given on probes relate only to the measuring range of the sensors.

Open the instrument only when this is expressly described in the documentation for maintenance or repair purposes.

Carry out only the maintenance and repair work that is described in the documentation. Follow the prescribed steps when doing so. For safety reasons, use only original spare parts from Testo.

Ensure correct disposal

Take faulty rechargeable batteries/spent batteries to the collection points provided for them.

Send the product back to Testo at the end of its useful life. We will ensure that it is disposed of in an environmentally friendly manner.

1. Safety instructions

Instruments with radio module 915.00MHz FSK

Warning: Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

·Reorient or relocate the receiving antenna.

·Increase the separation between the equipment and receiver.

·Connect the equipment into an outlet on a circuit different from that to which the receiver is needed.

·Consult the dealer or an experienced radio/TV technician for help.

Operation is subject to the following two conditions:

·this device may not cause harmful interference, and

·this device must accept any interference received, including interference that may cause undesired operation.

2.Intended purpose

This chapter gives the areas of application for which the product is intended.

Use the product only for those applications for which it was designed. Ask Testo if you are in any doubt.

testo 735 is a compact measuring instrument for measuring temperature. The product was designed for the following tasks/applications:

·Food industry

·Use as a reference standard with high-precision Pt100 immersion/penetration probes

The product should not be used in the following areas:

·Areas at risk of explosion.

·Diagnostic measurements for medical purposes.

5

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6 3. Product description

3.Product description

This chapter provides an overview of the components of the product and their functions.

3.1 Display and control elements

Overview

Infrared, USB interface

Display (light can be activated)Control buttons

Rear: Battery and radio module compartment, holding magnets

Magnetic field

May be harmful to those with pacemakers!

Keep a minimum distance of 15 cm between pacemaker and instrument.

Magnetic field

Damage to other instruments!

Keep a safe distance from products which could be damaged by magnetism (e.g. monitors, computers, credit cards).

Probe socket(s)

Button functions

Button Functions

Function button (3x): The function depends on the button assignment at the time

Change display of the 1st reading line

In configuration mode: Increase value, select option

Change display of the 2nd reading line

In configuration mode: Decrease value, select option

Print data

735-1 only: If the Cyclical Printing function is activated, the programmed measuring program is started.

Switch instrument on, switch display light on/off; switch instrument off (press and hold)

3. Product description 7

Function buttons (Function dependant on profile and setting)

Button						Functions
						Open (main) menu
						Enter confirmation
		OK
						Cancel
		ESC
				/		Hold value/display current measurement value
	Hold				ACT
						Reset max./min. values to current measurement value
	Reset
						Open menu item “Multi-point mean calculation“
	Mean
						Open menu item “Measuring program” (735-2 only)
	Measp
						Start test series (735-2 only)
	Start
						End test series (735-2 only), End Cyclical Print (735-1 only)
		End
						Save values (735-2 only)
	Save
						Open menu item “RadioC“
	Radio
						Open menu item“Location“
	MEM

Important displays

Display						Meaning
						Battery capacity (only for operation by battery/rechargeable battery):
						·	4 segments in the battery symbol are lit: Instrument battery is fully charged
						·	No segments in the battery symbol are lit: Instrument battery is almost spent
				(flashing)		Print function: Data are sent to the printer
,						Measurement channel no.: Channel 1, channel 2.
						If a measurement channel is a radio channel, the radio symbol lights up as well as the
						measurement channel no.

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8 3. Product description

3.2 Interfaces

Infrared interface

Measurement data can be sent to a Testo printer via the infrared interface on the head of the instrument.

USB interface

The mains unit (accessory part) can be connected to the head of the instrument via the USB interface to power the instrument.

Instruments with a memory: Measurement/instrument data can be exchanged with a PC via the USB interface.

Probe socket(s)

Plug-in measuring probes can be connected via the probe socket(s) on the base of the instrument. The instrument is a HighPower device, possibly an additional USB-Hub is required!

Radio module (accessory part)

Radio probes may only be used in countries in which they have been Type Approved (see application information of the radio probe).

Up to three radio probes can be connected via the radio module.

3.3 Voltage supply

Voltage is supplied via three mignon batteries (included in delivery) or rechargeable batteries or through a mains unit (accessory part). It is not possible to charge rechargeable batteries in the instrument.

When operating the instrument with the mains unit, insert batteries in order to avoid switching off the instrument in case of a power interruption.

4. Commissioning 9

4.Commissioning

This chapter describes the steps required to commission the product.

Inserting batteries/rechargeable batteries and a radio module (accessory part):

1Undo the two screws on the rear of the instrument and lift off the battery compartment cover.

2Insert batteries/rechargeable batteries (3x mignon) into the battery compartment. Observe the polarity!

3Push the radio module (accessory part) into the radio module compartment until it engages in place. Note the guide groove.

4Replace the battery compartment cover, press down and secure by tightening the two screws.

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