MU-Series
General Features
The MU-35 is a miniature, streamlined DC voltage measuring meter. The meter has three built-in header selectable ranges of 2V, 20V and 200V. It is specifically designed to be easily userscaled and calibrated to almost any conceivable engineering unit, such as temperature, pressure, viscosity or flow rates, etc., without requiring component changes.
On site scaling and recalibration is facilitated by multi-turn potentiometer that provide continuous adjustment within each of three header-programmable full scale ranges for span and zero offset. Display Hold and Display Test functions are also provided. The standard meters have a high efficiency red LED display.
Green displays may also be specified. (See ordering information for available choices).
The MU-35 interconnects by means of a push-on screw terminal that is provided with the meter. A high quality, internally isolated, wide range, switching supply is built into every MU-35 meter. This allows the meter to operate from a wide range of AC or DC voltages. (See specifications.) The isolation ensures that ground loop currents do not affect the meter stability.
Compatibility
The MU-Series have a matching DIN case style that is complementary to the Lynx, Leopard and Tiger family of meters. MU-Meters are the OEMs choice for economical switchboard and process indication. For economy, each model is dedicated to a specific application and designed for quick and easy installation.
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Input Configuration:........Single-ended with optional provision to
offset the zero of the reading being displayed
Input Impedance:.............1M minimum
Full Scale Ranges:..........Three built-in header selectable ranges of
2V DC, 20V DC and 200V DC full scale
A/D Converter:.................12 Bit Dual Slope
Accuracy:......................... (0.05% of reading + 2 digits)
Temperature Coefficient:...100ppm/C (Typical)
measurement with
Warm up Time:.................One minute to specified accuracy
a Resolution of 100 milliVolt.
Conversion Rate:.............3 readings per second
Display:.............................0.315" High Efficiency Red LED, optional Green LED, optional non-functional, right hand side dummy zero available
Decimal Selection:...........User programmable to 4 positions
Over-range Indication:....If input exceeds full scale on any range
being used, most significant "1" digit & polarity symbol is displayed all other digits blank.
measurement with
Power Supply:..................6V DC to 48V DC or 12V AC to 36V AC.
a Resolution of 100 milliVolt.
CMV
Max CMV (common mode voltage) is 50V.* *Because CMV is common with meter ground, higher CMV inputs to a max of 1KV, require mechanical isolation of all contactable meter parts.
Approximately 1.5 watts.
Operating Temperature:..0 C to +50 C
Storage Temperature:......20 to 70 C
Relative Humidity:...........95% (non-condensing)
Case Dimensions:...........1/32 DIN (Bezel 48Wx24Hmm)
Depth behind bezel (3.19) 81mm Plus (0.38) 9.5mm for connector
Weight:..............................312 gms (11oz)
397 gms (14 oz) when packed
MU-35......3.5 digit, Iso., 2/20/200 VDC, 5-36VDC/12-24VAC Pwr
MU-35CL...3.5 digit, Iso., 4-20mA input, 5-36VDC/12-24VAC Pwr
MU-35 Data Sheet (MU01)
Texmate, Inc. Tel. (760) 598-9899 www.texmate.com
Page 1
Span Range
Pot
Range Select
Header
Hold/Test/Blank
Select Header
The MU-35 interconnects by means of screw terminals. The screw terminal connector is provided with the meter.
REAR VIEW OF METER
SPAN
Range
Pot
ZERO
Range
Pot
Pin 1 - Signal Input High: Signal input high for the meter. Full scale ranges of 2V, 20V or 200V can be selected on the Range Select Header.
Pin 2 - Signal Input Low: Signal input low for the meter. Full scale ranges of 2V, 20V or 200V can be selected on the Range Select Header.
TEST
HOLD
Pin 3 - Hold/Test/Blank: Depending on the position of the internal jumper clip, connecting Pin 3 to Pin 4 will activate one of three special functions. If display hold is selected, the meter display will be latched. A/D conversions will continue but the display will not be updated until Pin 3 is disconnected from Pin 4.
BLANK
TEST
HOLD
BLANK
TEST
HOLD
BLANK
If Display Test is selected -1888 will be displayed to check for defective segments. Until Pin 3 is disconnected from Pin 4.
If Display Blank is selected the display can be blanked to conserve power. A/D conversions will continue, so that the display will show the true value of the input immediately when Pin
3 is disconnected from Pin 4.
Pin 4 - Hold/Test/Blank/Common: Connect this pin to Pin 3 to activate Hold, Test or Blank as explained above.
Pin 5 & 6 - Power Input 1: The MU-35 operates from any voltage from 6V DC to 48V DC or 12V AC to 36V AC. The power input is not polarity sensitive. The MU-35 consumes about 1.5 Watts of power.
Optional Zero
Offset Pot available
INPUT RANGE Header
Range values are marked on the PCB.Three positions are provided. After selecting a new range with the single jumper clip, recalibration is required.
SPAN Potentiometer (Pot)
The 15 turn SPAN pot is always on the left side (as viewed from the back of the meter). Typical adjustment is 100% of the input signal range.
HOLD/TEST/BLANK Header
Range values are marked on the PCB.Three positions are provided. After selecting a new range with the single jumper clip, recalibration is required.
ZERO Potentiometer (Pot)
The Optional ZERO pot when installed is always to the left of the SPAN pot (as viewed from the front of the meter). Typically it enables the displayed reading to be offset 1000 counts.
1. Select the required full scale voltage range, by repositioning the jumper clip on the range select header. Ranges of 2V, 20V and 200V full scale may be selected.
2. Apply an input of 0 volts. If the Zero Offset Pot is installed, adjust the pot until the meter reads 000. If no Zero Offset Pot is installed, the meter will auto-zero.
3. Apply an input equal to 95% of the full scale voltage.
4. Adjust the Span Pot until the meter displays the required
reading.
5. The MU-35 is now calibrated and ready for use.
(Whenever a new range is selected, re-calibration is required to meet the specified accuracy.)
Page 2
Texmate, Inc. Tel. (760) 598-9899 www.texmate.com
MU-35 Data Sheet (MU01)
For Standar Display
Decimal point position is selected on the Decimal Point Select Header on the Display Boad.
1.XXX
1X.XX
1XX.X
1XXX.
To customize the front bezel, each DU-meter is supplied with a white printed clear adhesive label popular containing
descriptors. Choose the descriptors desired, peel off the adhesive backing and align the descriptors in the center right of the faceplate.
various
Texmate Produces Thousands of Custom OEM Face Plates
Have Texmate Design and Build a Custom Face Plate to Suit your Next project!
Custom face plates have a nonrecurring artwork charge. A serial number is then assigned to each artwork, to facilitate reordering.
Small Run or One-Off custom face plates incur an installation charge, and are generally printed on a special plastic film, which is then laminated to custom faceplate blanks as required.
Large Run (250 pieces min): custom face plates are production silk screened, issued a part number, and held in stock for free installation as required by customer orders.
OEMs may also order Custom Meter Labels, Box Labels
Custom Data Sheets and Instruction Manuals.
The clear lockable cover is designed to be dust and water proof to NEMA-4X, IP65 standards. The assembly consists of a base and cover with a cam hinge and key-lock fastening mechanism.
An O-ring, or neoprene gasket forms a seal between the base and the panel. The cam hinge prevents the cover from closing when opened until pushed closed. The cover has a tapered recess that, when closed, forms a seal with a tapered spigot on the base. A key-lock employs a cam locking device to force the spigot into the recess, ensuring seal integrity. A safety catch keeps the cover closed even when the key is removed, and the keyhole can be used to attach a safety seal clip, preventing unauthorized opening.
Connector
Filter
PCB
Bezel
Transparent
Protective Plate
Due to the small size and the wide range power supply of the MU-35, it can fit into a variety of applications such as automotive, marine, utility, process industry, mosaic panels, clean room and in portable instrumentation.
MU-35 Data Sheet (MU01)
Texmate, Inc. Tel. (760) 598-9899 www.texmate.com
Page 3
Standa rd Options for this Model Number
Special Options and Accessor ies
Part Number
Description
List
BASIC MODEL NUMBER
Part Number
SPECIAL OPTIONS
Description
(Specify Inputs & Req. Reading)
HD-CHANGE.. Range change from the standard input as shown in BOLD Type.
V0-50K...... Zero offset potentiometer 50k CB-FS35..... Non-Std Range and Scale Changes
DISPL AY
ACCESSO RIES
STANDARD... Red LED, 0.3 inch high MU-GREEN....... Green LED MU-RED 4.5.......Dummy Zero Display Option w/ RED Display MU-GREEN4.5... Dummy Zero Display Option w/ Green Display
MU-CASE48X24.. 48x24mm Complete Case with Bezel.
75-MUBEZEL..... Black Bezel for 48x24mm Case 75-MUMTBRKT...Mounting Slide Clips, extra set (48x24mm case size).
For product details visit www.texmate.com
Local Distributor Address
450 State Place Escondido, CA 92029
Tel: 1-760-598-9899 USA 1-800-839-6283 Thats 1-800-TEXMATE Fax: 1-760-598-9828 Email: [email protected] Web: www.texmate.com
Page 4
Texmate, Inc. Tel. (760) 598-9899 www.texmate.com
MU-35 Data Sheet (MU01)
Texmate is an American manufacturer of high durability industrial grade panel meters, bar graphs, and transducers. Texmate's meters are frequently equipped with relays and various signal outputs for industrial automation applications and are known for their extremely long service life.