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Highly versatile universal indicator and
alarm controller - a one-product solution for
hundreds of applications!
›
Universal input Thermocouple, RTD, NTC, mA, V, mV,
potentiometer, digital pulse and AC current sensors
›
Universal wide range AC/DC power supply
›
22V excitation Powers two wire transmitters without an
external power supply
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Optional relays & 4–20mA retransmission
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Versatile construction With reduced depth casing and
0.8″ super-bright LED display
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Designed for harsh industrial environments
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Simple USB powered setup Using Define ToolBox - Free
download from defineinstruments.com/toolbox
Merlin
Universal Indicator
Specications
EMC inuence may have a minimal impact on instrument performance (additional error of <0.2% of full scale range).
General
Power supply 24–250V AC / 19.5–
250V DC, 47–63Hz, 6VA max
Isolation 2,300Vrms for 1min to all
inputs and outputs
Simple soware programming using
Dene ToolBox Bridge Key required,
sold separately
Universal input Specications below
Excitation 22V ±10% (25mA max)
Display
Digits 4 digit red LED, 0.8" (20mm),
7-segment characters
Display range -1999 to 9999
Annunciators 2 x setpoint indicator
LEDs (R2A model only)
NEMA 4X/IP65 sealed front bezel
Relay output (optional)
2x Form A relays (R2A model only)
Isolation to sensor and user input
commons 2,300Vrms for 1min
Working voltage 240Vrms
Contact rating 2 x 3A @ 120/240V AC
or 28V DC
Life expectancy 100K cycles min at
full load rating
User input (optional)
One user input (R2A model only)
Can be programmed for manual relay
reset, latching, or zero functions
Max continuous input 20V DC
Not isolated to sensor input common
Analog output (optional)
Analog output (R2A model only)
4–20mA or 20–4mA DC
Isolation to sensor and user input
commons 1,400Vrms for 1min
Working voltage 125V
Max output drive 20mA (600Ω max
load at 12V DC)
Accuracy/repeatability 0.05% of FSO
Resolution 1μA
Temperature dri 30ppm/°C typical
Powered Self-powered (active)
Environmental conditions
Operating humidity 5–85%RH max
(non-condensing)
Operating temp 14–122°F (-10–50°C)
Storage temp -4–140°F (-20–60°C)
Altitude Up to 1.24mi (2,000m)
Construction
Panel mount enclosure Rated for
NEMA 4X/IP65 outdoor use. Panel
gasket and mounting clips included.
Installation Category II, Pollution Degree 2.
Flame resistant.
Dimensions 1.89 x 3.74 x 2.44"
(48 x 95 x 62 mm)
Cutout area 1.77 x 3.62" ±.02
(45 x 92mm ±.5)
Space behind panel 3.15" (80mm)
minimum space required behind
panel (inc. connectors and wiring)
Weight 6.87oz (195g)
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Thermocouple input
TC types J, K, B, E, N, R, S, T
Input impedance 1MΩ min
TC lead resistance 100Ω max
Cold junction comp. 14–158°F
(-10–70°C)
Accuracy E, J, K, N, T: <±1°C
B, R, S: <±2°C
Temp. dri 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
CJC error <±1°C
Response time 400msec
RTD input
RTD Pt100/Pt1000 DIN 3-wire type
(2-wire can be used with oset trim)
Pt100 lead wire resistance
50Ω/wire max. 0.02% FSO oset error
per Ω of lead resistance mismatch
Pt1000 lead wire resistance
20Ω/wire max. 0.002% FSO oset
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
Temperature dri <0.007°C/C
Response time 400msec
NTC input
NTC -67–257°F (-55–125°C)
various thermistors
Sensor types 10K Beta 3984/3435
Response time 100msec
Accuracy Better than 0.4°C
Temperature dri <50ppm/°C
Current input
Range 0/4–20.000mA
Excitation +22V DC, 25mA max
USB prog zero 0–±99% of span
Field prog span 1μA–24mA DC
Input resistance 10Ω
Max over-range 50mA DC continuous
Linearity and repeatability
<±0.02% FSO typical
Temperature dri <50ppm/°C
Response time 100msec
Voltage input
Ranges ±200mV, -200mV to 1V,
0–10V, ±10V, -10 to 30V, 0–300V
USB prog zero 0–±99% of span
USB prog span 95% of FSO
Input resistance 1MΩ min
Linearity and repeatability
<±0.02% FSO typical
Temperature dri <50ppm/°C
Response time 100msec
Digital pulse
Frequency range 0–2000.0Hz
Soware modes General frequency,
Flow rate (pulse), or RPM (pulse)
Sensors Open collector NPN (2 and 3
wire)/PNP (2 wire only)
Excitation +22V DC, 25mA max
Response time 100msec
Linearity and repeatability 0.05%
Temperature dri <50ppm/°C
Potentiometer input
Potentiometer input 3 wire
Excitation voltage Variable
Potentiometer resistance <1kΩ low
pot; 1–4kΩ med pot; 4–20kΩ high pot
Field prog zero 0–90% of span
Field prog span 0.1–100%
Linearity and repeatability <±0.05%
FSO typical
Response time 100msec
Temperature dri <50ppm/°C
AC current sensor input
Sensor type Current transformer
(ACCS-420, ACCS-420-L, ACCS-010)
Header selectable amperage range
ACCS-420/010 = 100/150/200A
ACCS-420-L = 10/20/50A
Overload (continuous) ACCS-420/010:
175/300/400A respectively; ACCS420-L: 80/120/200A respectively
Output Representing 0–100% of full
scale input range. ACCS-010: 0–10V DC
ACCS-420(-L): 4–20mA DC loop pwr
Power supply ACCS-010: Self powered
ACCS-420(-L): Loop pwr, 15–36V DC
Accuracy 1% of full scale
Response time 250ms (10–90%)
Isolation voltage 2,000V
Frequency 50–60Hz
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 Component File Number E473114
Copyright © 2017 Dene Instruments Ltd
MER-DS-17V04 (0616)
Merlin
New Zealand (Head O ce)
Ph: +64 (9) 835 1550
sales@de neinstruments.co.nz
www.de neinstruments.co.nz
Merlin Product Codes
MER-UV
-R2A 2 x relay outputs
Accessories (Sold Separately)
BRIDGE-KEY
United States (Dallas, TX)
Ph: (214) 926 4950
sales@de neinstruments.com
www.de neinstruments.com
Merlin Universal Indicator
Universal power supply (24–250V AC
/ 19.5–250V DC)
1 x analog output (4–20mA)
USB Bridge Key for PC programming
(Not UL Approved)
South Africa (Pretoria)
sales@de neinstruments.co.za
www.de neinstruments.co.za
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