
60.0
58.5 MAX
54.2 MAX
46.0 MAX
6.3 MAX
51.5 MAX
-+
1
1/2
0
Seal
Label
Mounting Bracket
Label
21
43
NOTES:
1.0 MATING CONNECTOR; 4-PIN AMP P/N 794805-1 WITH UL RATING 94V-0,
 INTERFACE SEAL P/N 794772-4, WIRE SEAL 794758-1, PINS P/N 770904-X FOR #18-24 AWG
2.0 52mm METER IS PROVIDED IN A STANDARD ROUND PACKAGE FOR
 MOUNTING IN A 52mm DIA DASH PANEL HOLE. SEE DETAIL FOR PANEL CUTOUT WITH KEY.
3.0 MATERIAL: CASE — POLYCARBONATE, LENS — CLEAR POLYMETHYLMETHACRYLAT (PMMA),
 COVER — POLYCARBONATE, OVERLAY — POLYCARBONATE, MOUNTING BRACKET — POLYCARBONATE.
4.0 THIS UNIT IS DESIGNED FOR A MOUNTING PANEL THICKNESS OF 0.8 mm - 6.4 mm.
5.0 ENVIRONMENTAL PROTECTION FRONT IP-65, REAR IP-65 (WITH MATING CONNECTOR INSTALLED AND 
 AND SEALS IN DEVICE CONFIGURATION PORTS).
6.0 WEIGHT: 0.095 kg MAX, INCLUDING MOUNTING BRACKET.
7.0 OPERATING VOLTAGE = 12 TO 48 VDC.
8.0 LCD VIEWING ANGLE = O TO –20~.
SEE NOTE 1
PIN # FUNCTION
1
2
3
4
B–
B+
CAN HI
CAN LO
The default display will remain until either button 
is pressed. The numeric section will then display 
battery voltage. The user can sequence through each 
parameter above by pressing a button once. If a button 
is not pressed for 3 seconds or when the end of the 
sequence is reached, the default screen will return.
4.0 Trouble Shooting
For any deviation in operation described in Section 
3.0, verify proper voltage rating, check harness pin-
out terminals, and make sure the 4 pin AMP mating 
connector is fully seated.
5.0 Maintenance
The 3100R is not serviceable in the eld. 
6.0 Safety
xThis instrument was manufactured and tested according 
to the applicable technical standards. It complies with all 
the safety regulations as shipped from the factory.
xInstallation and startup must be performed by skilled 
personnel.
xFailure to install and operate the unit in accordance 
with these instructions may result in damage or injury.
xIf safe operation of the instrument can no longer be 
ensured, stop and secure it against accidental operation.
xIf instrument failure or malfunction may cause personal 
injury or material damage, use additional safety 
measures such as limit switches, guards, etc.
xRead the Operating Instructions carefully before startup.
xNote the safety instructions marked with this warning 
symbol in this manual.
7.0 Guarantee
Curtis Instruments’ products and/or components 
are guaranteed against defects in workmanship and 
material for a period of two years, or as dened in the 
individual product literature, from date of shipment 
from our factory, when applied in a proper application 
within specied ratings. This guarantee is limited to 
repair or replacement F.O.B. our factory. There is no 
further warranty or implied representation, guarantee, 
promise or agreement as to any Curtis Instruments 
product and/or component. Curtis Instruments, Inc., 
cannot assume responsibility or accept invoices 
for unauthorized repairs to its products and/or 
components, even though defective. In no case will 
Curtis Instruments’ responsibility extend to products, 
components or equipment not of its manufacture. 
Under no circumstances shall Curtis Instruments, Inc., 
be liable for any special or consequential damages or 
loss of prots or other damages. Returned goods will 
not be accepted unless identied by a Curtis Return 
Material Authorization (RMA).
All specifications are subject to
change without notice.
53048 Rev E 2/15CURTIS INSTRUMENTS, INC. 200 Kisco Avenue, Mt. Kisco, NY 10549 (914) 666-2971 www.curtisinst.com
Dimensional Drawing mm