WITH RELAY TRIP AND LOGGING FUNCTION
Important - Please read this document before installing.
Everyeffort has been taken toensure theaccuracy of this document, however we do
not accept responsibility for damage, injury, loss or expense resulting from errors and
omissions, and we reserve the right ofamendment without notice.
IMPORTANT - CE & SAFETY REQUIREMENTS
The instrument is designed to be directly attached to the sensorprobe assembly.
Remote Probesmay be used butthe user mustensure all sensor and cable entries
maintain environmental protection to at least IP65 rating.
To maintain CE EMC requirements, input wires must be less than 3 metres.
The product contains no serviceable parts, or internal adjustments. No attempt must be
made to repairthis product.Faulty units must be returned to supplier for repair.
This productmust be installed by a qualifiedperson. All electrical wiring must be
carried out in accordance with the appropriate regulations for the place of installation.
Before attempting anyelectrical connection work, pleaseensure the battery is removed
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1~DESCRIPTION.
The DM650TM batterypowered indicator accepts RTD orthermocouple temperature
sensors and displaysthe sensor temperature in °C or °F on a 6-digit LCD display. The
instrument offers an advanceddisplay modeallowing theuser to also display one or
two (1 to 32) character messages. Additional to the messages,the usermay select an
alert event to occur when the temperature iswithin a band. The change-over relay can
be used together with the messaging and alert to provide switching at user-set switch
points. In addition to this, on board datalogging is also available to record process
details at up to 5000 points.
2~RECEIVING AND UNPACKING.
Please inspect the packaging and instrument thoroughly for any signs of transit
damage. If the instrument has been damaged, please notify your supplier immediately.
3~SPECIFICATION.
Referto data sheet forfull specification.
The instrument is a highaccuracy digital thermometer. In order to ensure correct
operation,the following must be observed:
The product must be stored in a dryclean environment and remain in original
packaging prior to installation.
The instrument must not be installed adjacentto electro-mechanical starters,
controllers, thyristor power units or electrical switch gear.
Any cleaning ofthe instrument must be doneusing a mild detergent and softcloth.No
solvents or abrasive cleanersshould be used.
Stated ambientoperating conditions mustnot be exceeded. Battery life will reduce with
higher ambient temperature operating conditions.
4.2~ELECTRICAL.
For a wiring diagramplease refer to the rear panel of the DM650TM inside the
case housing.
Two-part connectors are used for input and relayconnections, allowing the unit to be
easily removed from the housing for reprograming or data download if this is not
possible in situ. On insertionof battery theunit will run through a power up check;
during this time the relay may change state.
IMPORTANT: Always remove battery before any wiring takes place. Gain access to
the connectors and battery holder by twisting cap to release front panel assemblyfrom
case.
RTD: Forbest result we recommend using three wire connection; this method
compensates for any lead resistance between the sensing element and instrument.
Two wire connection is possible: refer to connection diagramon the instrument
protection panel.
THERMOCOUPLE: T/C wire type must be maintained from the sensor element to the
instrument terminals. The terminalsare effectively the cold junction point and can be
displayed as “Case” temperature.
RELAY CONNECTION: A relaywith changeover contacts is available. Screw terminals
are provided forconnection for wire size 16 to 20 AWG.The relay contacts are rated at
48VDC 28 VAC RMS @ 1 A (5 mAminimum current) see DM650TMdata sheet.
BATTERY: To remove battery, use screw driver to ease the positive endof thebattery
out of holder. Insert new battery negative end first then press into place. (Observe
polarity).Batterytype 3.6 V Lithium (2.4 A/Hr) CR14505 (IEC) AA case style. Please
dispose of the batteryin a responsible way.
WARNING
For configuring, reading live data or reading logged data if using a grounded
thermocouple probe on the input, it isimportant not to connect the programming USB
lead to a mainspowered computer. It is possible to damage the instrument if
connected in this way.
To avoid damage use one of the following methods:
•Disconnect the probe before configuration, reconnect the probeafter
configuration.
•Ensure the probe and DM650 housing are not in contact with any conductive
partsduring configuration.
•Use a laptop type computer running from its battery power supply, not connected
to a mains supply. This isrecommended for reading liveddata oroffsetting a unit
if already installed in the field.
•Use a USB isolator between the computerandtheDM650.
5~USER CONFIGURATION.
IMPORTANT
READ COMPLETE SECTION BEFORE ATTEMPTING CONFIGURATION.
PARTICULAR CARE SHOULD BE TAKEN REGARDINGTIMEOUTS IN MENU 2 & 3
The instrument is provided with a USB interface for direct connection to a PC. Free
software USBSpeedLink is available.Please referto the USBSpeedLink software for
further informationon configuration. The software can bedownloaded from
www.status.co.uk.
DISPLAY: The display provides six 14 segment characters for display of temperature
and alpha-numeric messages, together with a 8 segmentbar graph and six icons. The
display is capable of operating in an ambient temperature range of (-30 to 70) °C, but
at temperatures lower than -5 °C (due to the slower LCD speed) scrolled messaging is
not practical, so the display will automatically revert to basic mode showing
temperature.The display’s high contrast, coupled with a digit height of 7.9 mm,offers
clear readouts at low as well as high ambient light and direct sunlight.
The display layout is as follows:
