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 Profile..............................................................................12
6.1.2 Units ..............................................................................13
6.1.3 Device ............................................................................13
6.1.4 Probe ..............................................................................15
6.1.5 Language ........................................................................16
6.2 Main menu ....................................................................17
6.2.1 Memory (735-2 only) ......................................................18
6.2.2 Measuring program (735-2 only) ....................................19
6.2.3 Mean ..............................................................................20
6.2.5 Alarm ..............................................................................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
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!
Tex t Display text Text appears on the instrument display.
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.
Button
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 ➝➝Inst.data ➝ .
(
1) (2) (3) (4)
Steps required:
1 Press / to select the Device function.
2 Confirm selection with .
3 Press / to select the Inst.data function.
4 Confirm selection with .
OK OK
OK
OK
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General notes
4
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
5
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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.
1. Safety instructions
6
3. Product description
This chapter provides an overview of the components of the product and their
functions.
3.1 Display and control elements
Overview
➀ Infrared, USB interface
➁ Display (light can be activated)
➂ Control buttons
➃ 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).
➄ Probe socket(s)
Button functions
Button Functions
Function button (3x): The function depends on the button assignment
at the time
Change display of the 1streading line
In configuration mode: Increase value, select option
Change display of the 2ndreading 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
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Function buttons (Function dependant on profile and setting)
Button Functions
Open (main) menu
Enter confirmation
Cancel
/ Hold value/display current measurement value
Reset max./min. values to current measurement value
Open menu item “Multi-point mean calculation“
Open menu item “Measuring program” (735-2 only)
Start test series (735-2 only)
End test series (735-2 only), End Cyclical Print (735-1 only)
Save values (735-2 only)
Open menu item “RadioC“
Open menu item“Location“
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.
MEM
Radio
Save
End
Start
Measp
Mean
Reset
Hold ACT
ESC
OK
3. Product description
8
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 infor mation 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.
3. Product description
9
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4. Commissioning
This chapter describes the steps required to commission the product.
➣
Inserting batteries/rechargeable batteries and a radio module (accessory
part):
1 Undo the two screws on the rear of the instrument and lift off the battery
compartment cover.
2 Insert batteries/rechargeable batteries (3x mignon) into the battery
compartment. Observe the polarity!
3 Push the radio module (accessory part) into the radio module
compartment until it engages in place. Note the guide groove.
4 Replace the battery compartment cover, press down and secure by
tightening the two screws.
4. Commissioning
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