Merlin Universal Input Digital Indicator
Merlin Universal Input Digital Indicator
With Simple Setup via USB
Additional information
| Weight | 0.646 kg |
|---|---|
| Dimensions | 9.5 × 12.4 × 6.4 cm |
| Power Supply | UV – 24-250V AC / 19.5-250V DC |
| Output Options | – No Output |
What it does
It doesn’t matter what voltage you’re using
Sending to another country with a different voltage? Worried about the unit getting fried? Relax.
The Merlin accepts 24-250V AC or 19.5-250V DC making it a truly universal unit suitable for anywhere in the world. So now there’s no need to stock separate high voltage and low voltage units, now you just need one: this one!
No more accidental changes during handling!
With programmable panel meters one slip of the finger can be the root of many headaches. But with the Merlin you don’t have to worry! There’s no buttons on the unit so you don’t need to stress about accidental parameter alterations during handling. Instead set-up is via your PC using a USB connection.
So simple it doesn’t need a manual
It doesn’t get much simpler than this. No more reading hefty manuals or frustrating delays. You’ll experience the rare joy of getting your application up and running sooner and afterwards you’ll wonder why you’ve tolerated difficult setups all this time.
You don’t need to power it up to configure
Yes, you heard us correctly. You can configure the unit directly using the Merlin’s excitation voltage. You’ll be surprised how easy we’ve made it.
The Merlin digital panel meter can be scaled into any engineering unit, and the result displayed on the large 0.8” 4 digit super-bright LED display. Auto ranging is available to increase the dynamic range of viewable data. The Merlin R2A adds two Form A 3 Amp relays for a variety of control and alarm functions, and a 4-20mA active output for retransmission to PLCs and SCADA systems.
This panel indicator has been designed for harsh industrial environments. With an IP65 sealed bezel and extensive testing of noise effects to and beyond CE requirements, the Merlin LED panel meter provides a tough and reliable application soluti
Universal input:
- Temperature input : Thermocouple (B/E/J/K/N/R/S/T types), RTD (Pt100/Pt1000), NTC (10K Beta 3984/3435)
- Process input : Current (0/4–20.000mA DC), Voltage (various ranges from -10V to 300V DC)
- Digital input : NPN (2 and 3 wire)/PNP (2 wire only) open collector (0–2000.0Hz)
- Potentiometer input : (<1kΩ to 20kΩ)
- AC current sensor input : (ACCS-010/ACCS-420)
Other features:
- Universal AC/DC power supply (24-250V AC, 19.5-250V DC) – no header adjustments required!
- Optional relay outputs, ideal for alarming and simple on/off control
- Optional isolated 4–20mA output, making the Merlin ideal for use as a PLC/SCADA accessory
- 22V excitation to power two wire transmitters
- Flexible 32 point linearization table
Easy, USB Powered Programming
The unit boasts a 1 minute setup time using the Define Toolbox configuration software. All functions and features are explained expertly in the dynamic sidebar help – perfect for the novice starting out who can use it to learn about industrial sensors and applications, or the expert who wants to save commissioning time.
Try Before You Buy!
Use the product simulator inside our free ToolBox software to demo how this instrument works.
Bridge Key Required!
In addition to this software a Bridge Key is required for the configuration of this product.
You must order one unless you already have one from a previous product purchase.
Compare digital indicators
| Brand & Model | Power Supply | Input | Analog Out | Relays | UL Listed? | Price |
|---|---|---|---|---|---|---|
| Red Lion PAXD000 | 85-265 AC or 11-36V DC | DC | 0/4-20mA or 0-10V | 2 | Yes | $403 |
| Precision Digital Trident | 85-265 AC or 12-36V DC | Universal | 4-20mA | 2 | Yes | $349 |
| Newport iSeries – i8A00 | 90–265V AC or 12–36V DC | Universal | 0/4-20mA or 0-10V | None | Yes | $295 |
| Define Instruments Merlin | 19.5–265 (AC/DC) | Universal | 4-20mA | 2 | Yes | $249 |
Specifications
Universal Input
Number of universal inputs: 1
Accepts Thermocouple, RTD, NTC, Current, Voltage, Digital Pulse, Potentiometer & AC Current sensor (See below for full specifications for each input type)
Power
Power supply: 24-250V AC / 19.5-250V DC, 47-63Hz, 6VA max
Isolation: 2,300Vrms for 1min to all inputs and outputs
Thermocouple Input
Thermocouple types:
K: -328 to 2502°F (-200 to 1372°C)
B: 752 to 3272°F (400 to 1800°C)
E: -328 to 1472°F (-200 to 800°C)
J: -328 to 1832°F (-200 to 1000°C)
R: -58 to 3200°F (-50 to 1760°C)
S: -58 to 3200°F (-50 to 1760°C)
T: -328 to 752°F (-200 to 400°C)
N: -328 to 2372°F (-200 to 1300°C)
T/C lead resistance: 100Ω max
Cold junction compensation: -14 to 158°F (-10 to 70°C)
CJC error: < ±2°C
Accuracy: E, J, K, N, T: < ±1°C. B, R, S: < ±2°C.
Ambient drift: E, J, K, N, T: < ±0.05°C/C. B, R, S: < ±0.2°C/C.
Sensor break output drive: Function high upscale/low downscale
Response time: 400msec
RTD Input
RTD input type: PT100 or PT1000 DIN 3-wire type (2-wire can be used with off set trim)
Lead wire resistance: PT100: 50Ω/wire max. 0.02% FSO off set error per Ω of lead resistance mismatch PT1000: 20Ω/wire max. 0.002% FSO off set error per Ω of lead resistance mismatch
Sensor current: 0.3mA nominal
Sensor break output drive: Function high upscale/low downscale
Accuracy: Better than 0.2°C
Ambient drift: <0.007°C/C
Response time: 400msec
NTC Input
NTC: 10K Beta 3984: -67 to 257°F (-55 to 125°C) 10K Beta 3435: -58 to 230°F (-50 to 110°C)
Response time: 100msec
Accuracy: Better than 0.4°C
Ambient drift: <50ppm/°C
Current Input
Range: 0/4–20.000mA
Excitation: +22V DC, 25mA max
USB programmable zero: 0–±99% of span
Field programmable span: 1μA–24mA DC
Input impedance: 10Ω
Max over-range: 50mA DC continuous
Linearity & repeatability: <±0.02% FSO typical
Ambient drift: <50ppm/°C
Response time: 100msec
Voltage Input
Ranges: Millivolts: ±200mV, –200mV to 1V Volts: 0–10V, ±10V, –10 to 30V, 0–300V
USB programmable zero: 0–±99% of span
USB programmable span: 95% of FSO
Input impedance: 1MΩ min
Linearity & repeatability: 0–10V: <±0.05% FSO 0–300V: <±0.1% FSO. All other ranges: <±0.02% FSO typical
Ambient drift: <50ppm/°C
Response time: 100msec
Digital Pulse Input
Frequency range: 0–2000.0Hz
Sensors: Open collector NPN (2 and 3 wire)/PNP (2 wire only)
Excitation: +22V DC, 25mA max
Response time: 100msec
Software modes: General frequency, Flow rate (pulse), or RPM (pulse)
Linearity & repeatability: 0.05%
Ambient drift: <50ppm/°C
AC Current Sensor Input
Sensor type: Current transformer (ACCS-420(-L)/ACCS-010)
Amperage range: Header selectable ACCS-420/010 = 100/150/200A ACCS-420-L = 10/20/50A
Overload: (continuous) ACCS-420/010 = 175/300/400A respectively ACCS-420-L = 80/120/200A respectively
Output: (Representing 0–100% of full scale input range) ACCS-420 = 4–20mA DC loop powered ACCS-010 = 0–10V DC
Power supply: ACCS-420(-L) = Loop powered, 15–36V DC ACCS-010 = Self powered
Accuracy: 1% of full scale
Response time: 250ms (10–90%)
Isolation voltage: 2,000V
Frequency: 50–60Hz
Potentiometer Input
Potentiometer input: 3-wire
Excitation voltage: <1kΩ low pot; 1–4kΩ med pot; 4–20kΩ high pot
Potentiometer resistance: Variable
Field programmable zero: 0–90% of span
Field programmable span: 0.1–100% Linearity & repeatability
Linearity & repeatability: <±0.05% FSO typical
Response time: 100msec
Ambient drift: <50ppm/°C
Relay Output
Number of relay outputs: 2 (R2A model)
Relay output type: Form A
Isolation: Isolation to sensor and user input commons: 2,300Vrms for 1min. Working voltage 240Vrms
Contact rating: One Relay energized: 3amps at 120/240V AC or 28V DC (resistive load). 3amps max total current with both relays energized
Life expectancy: 100K cycles min at full load rating
Analog Output (Retransmission)
Number of analog outputs: 1 (R2A model)
Analog output type: Self-powered (active) 4-20mA or 20-4mA DC
Isolation: Isolated to sensor and user input commons
Isolation test voltage: 1,400Vrms for 1min. Working voltage 125V.
Accuracy/repeatability: 0.05% of FSO
Resolution: 1μA
Max output drive: 20mA (600Ω max load at 12V DC)
User Input
Number of user inputs: 1 (R2A model). Can be programmed for manual relay reset, latching, or zero functions
Max continuous input: 20V DC
User input isolation: Not isolated to sensor input common
Programming
Define ToolBox: USB programmable using Define ToolBox (Bridge Key required)
Display
Display type: 0.8″ (20mm) red LED, 7-segment characters
LED indicators: 2 x setpoint indicator LED’s (R2A model only)
Digits: 4
Full scale range: -1999 to 9999:
Construction
Casing: Panel mount enclosure. Installation Category II, Pollution Degree 2. Flame resistant. Panel gasket and mounting clips included.
Ingress protection rating: IP65 indoor use. (Face only, when mounted according to manufacturer’s instructions)
Dimensions (H x W x D): 1.89 x 3.74 x 2.44″ (48 x 95 x 62 mm)
Weight: 6.87oz (195g)
Cutout area: 1.77 x 3.62″ ±.02 (45 x 92mm ±.5)
Space behind panel: 3.15″ (80mm) minimum space required behind panel (includes space for connectors/wiring)
Environmental Conditions
Operating temperature: 14 to 122°F (-10 to 50°C)
Storage temperature: -4 to 140°F (-20 to 60°C)
Operating humidity: 5-85%RH max (non-condensing)
Altitude: Up to 2,187yd (2,000m)
Certifications & Compliances
EN 61326-1: Immunity to Industrial Locations
Emission: CISPR 11 Class A (EN 61326)
Safety requirements for electrical equipment for measurement control and laboratory use: EN 61010-1 General Requirements, EN 61010-2-030 Particular Requirements for Testing and Measuring Circuits
UL listed: File Number E473114
Documents
Software
Define ToolBox
Smart, simple software to program your non-Zen series products
Use Define ToolBox software to program your non-Zen series product via your PC. It configures:
- Merlin Universal Digital Indicator
- Twin Link Point-to-Point Wireless Transmitter Receiver
- All Define Instruments Transmitters (Javelin, TM-2DLI, TM-2HL, TM-2HLI, TM-4DPI)
ToolBox offers a simple interface for connecting to your compatible device, and a range of flexible configuration options, including an extensive library of pre-calibrated ranges and linearization tables for advanced scaling.
Order Codes
MER |
|
| -UV | 24-250V AC / 19.5-250V DC |
| Output (Optional) | |
| None | |
| -R2A | 2 x relay outputs (PLUS 1 x User input for relay reset or latching) 1 x 4-20mA analog output |
| Sample order codes: MER-UV or MER-UV-R2A | |
All prices are in US Dollars. For pricing in other currencies, please contact us.