ETI Precision User manual

model order code
Precision 222-053
Precision Plus 222-051
Reference 222-055
Reference Plus 222-063
This instrument has been checked or calibrated
against reference instrument(s) calibrated by a
UKAS Accredited Calibration Laboratory.
PT100 to BS EN 60751
INSTRUMENT RECORD CARD
serial no. ________________________________
calibrated by ______________date ___________
Precision &
Reference
Thermometers
Operating Instructions
545-150/07.12.16
manufactured by
Electronic Temperature Instruments Ltd
Worthing · West Sussex · BN14 8HQ
tel: [phone] · email: [e-mail]
www.etiltd.com
0 °C 100 °C
Protronics Intertrade Co., Ltd.
38/40-41 Moo.3 Lumlookka Rd., T.Khukhot
A.Lumlookka, Phatumthani 12130 Thailand.
e-mail [email protected] www.ponpe.com

INSTRUMENT OPERATION - Connect a
probe via the socket located on the top of
the instrument (where applicable). Screw
the collar of the plug, finger-tight to ensure
a secure connection (do not over tighten).
The instrument is switched on by pressing the
ON/OFF button. Apply the tip of the probe
to the substance, medium or surface to be
measured. The instrument reading may take
a few seconds to stabilise, depending on the
nature of the measurement and sensitivity of
the probe.
HOLD - Press the HOLD button to freeze the
display. Press again to continue measuring.
MAX/MIN - Press the MAX/MIN button to
display the values. The instrument retains the
max/min values when switched off. To reset,
press the MAX/MIN button for three seconds,
'rst' will be displayed.
AUTO-OFF - The unit will switch off
automatically after 10 minutes. To disable
auto off press the HOLD button whilst
switching on the instrument (this is reset when
the instrument is switched off).
TRIM - PRECISION, PRECISION PLUS
& REFERENCE PLUS ONLY - Press the
MAX/MIN and ON/OFF buttons at start-up
for five seconds to enter (Offset is displayed).
Press HOLD (up) or MAX/MIN (down) to set
the trim value (maximum of ±2.00 °C). Press
the ON/OFF button to save the value and
exit Trim mode.
OPEN CIRCUIT/FAULTY PROBE - If the probe
has developed an 'Open Circuit' fault the
instrument will display 'Err'.
SENSORS - This instrument should only be
used with PT100 (platinum resistance probes,
0 °C = 100 Ω) BS EN 60751 fitted with
suitable miniature plug (where applicable).
BATTERY REPLACEMENT - The instrument will
display 'LO BAT' to warn that the batteries
will need changing soon. The instrument
continues to measure accurately but after
further usage the instrument will display 'flat
bat' and shutdown. Replace the batteries with
three AAA batteries located under the rear
cover that is held in place by a single screw.
WARNING: IPA and other solvents may
cause damage to the case and screen of this
instrument.
GUARANTEE - This instrument carries a
two-year guarantee against defects in either
components or workmanship. During this
period, products that prove to be defective
will, at the discretion of ETI, be either repaired
or replaced without charge. This guarantee
does not apply to probes, where a six-month
period is offered. The product guarantee
does not cover damage caused by fair wear
and tear, abnormal storage conditions,
incorrect use, accidental misuse, abuse,
neglect, misapplication or modification.
Full details of liability are available within
ETI's Terms & Conditions of Sale at
www.etiltd.com/terms. In line with our policy
of continuous development, we reserve the
right to amend our product specification
without prior notice.