Class1 Digital Display User Manual
Contents
Table of Contents
Contents................................................................................1
Digital Display s ......................................................................2
Mounting................................................................................3
Harness.................................................................................4
Cal. Overview .................................................................... 5-6
Flowmeter.......................................................................... 7-9
Calibration ...........................................................................10
Example CAL.......................................................................11
V alue Flow...........................................................................1 2
Super Flow ..........................................................................1 3
V ehicle Speed.................................................................14-15
Pressure Gauge ..................................................................16
Aerial Loading.................................................................17-19
Water Le vel.....................................................................20-22
Breathing Air...................................................................23-25
Oxygen Supply ...............................................................26-28
Dual Amplifier ......................................................................29
GPM Flowchart ...................................................................30
IGPM Flowchart ..................................................................31
LPM Flowchart ....................................................................32
Notes...................................................................................33
Troubleshooting ..............................................................34-35
1
Digital Displays
Class1
’s Digital Gauges.
Digital displays come in both seven (7) segment bright LED displays for alphanumeric
information and bargraph displays f or percentage information.
Currently available displa ys:
102046 Flowmeter
102190 Pump Pressure (Intake and Discharge)
102245 T ank Le vel Gauge (Water and F oam)
102245 Pressurized Tank Level (0 to 100 %)
102007 Speedometer
102342 Aerial Loading
102263 Breathing Air Lev el (0 to 100 %)
102264 Oxygen System Level (0 to 100 %)
103282 Dual Current Amplifier for dual displa ys
(air, O2 and Aerial Loading)
0 25 50 75 100
LOW LEVEL LOADING
0 25 50 75 100
% AIR REMAINING
TEST
ALARM SILENCE
0 25 50 75 100
WATER LEVEL
0 25 50 75 100
% OXYGEN REMAINING
TEST
ALARM SILENCE
SPEEDOMETER
PUMP INTAKE
FLOWMETER
TOTALIZER
PUMP DISCHARGE
2
Mounting
The
Class1
Overall area necessary for installation is 2.5” by 3.2”.
Two 0.20 diameter holes are pro vided for mounting screws .
1.510
.277
digital display mounts in a 2.85” by 1.55” cutout.
2.840"
Ø 0.201"
(2) HOLES
.470 1.900
3.125"
DIGITAL DISPLAY
2.462"
0.285" 3.832"
3
Harness
The digital displays are connected to the OEM harness with a Deutsch 8 pin miniconnector .
Mating Connector: DTM 06-08S
Locking Wedge WM-8S
Mating T erminal: 0462-201-20141 20 gauge socket
General T erminal Assignments:
1) Alarm Output (Ground)
8
7
6
5
Wire Insertion View
1
2
3
4
2) Primary Pressure Signal
3) Sensor Supply (+ 5 or +10 VDC)
4) System P ower (+ 12 VDC)
5) System Ground
6) Sensor Ground
7) Signal (frequency or secondary PSI in)
8) Test, Total or Alarm Switch (Ground)
Not all of the digital displays use all of the terminals.
See individual display pages for application specific inf ormation.
Harnesses are available for the digital displa ys in v arious lengths.
These include transmitter/transducer and power connections.
Harness Part Numbers by length and application.
5’ 10’ 20’ 30’
Flowmeter Display 102064 102033 102065 103165
Pressure Display 102060 102035 102061 102271
Breathing Air Display 102670 102671 102672
Oxygen System Display “ “ “
Tank Level Display 102193 102194 102195 102729
Dual T ransducer 102439Y 102455
Speedometer 102242 102243 102244
DC Voltmeter “ “ “
Dual Display “Y” 102294 102295
Dual Current Amplifier 103318
Display Pigtail 102272 Extension 15’ 103367
4
Cal. Overview
Location of Magnetic Switches
Digital Display Calibration should be performed to assure accuracy.
The calibration mode is entered by the use of a “password”.
There are two magnetic switches, one located at each side of the display.
These switches are activated with the use of a magnet.
Switch activation is visually confirmed by the lighting of the closest decimal point on
the display to the switch.
Display Calibration sequence for Gauges with 7 segment LED’s
A password will look like the following example.
L L L R R R
Enter the switch sequence with a magnet to enter the basic calibration mode.
Left Switch Left Switch Left Switch Right Switch Right Switch Right Switch
If the password is correctly entered,
ber that is dependent on the display being calibrated (usually 0 ). If necessary, the calibration
number can be changed using the switch on the right side.
CAL
will be displayed for 1/2 second followed by a num-
Establish accurate and stable conditions f or calibration.
When the calibration conditions are stable, activ ate the left switch.
The display will read
and then return to normal operation.
donE
5
Cal. Overview
Location of magnetic switches
0 25 50 75 100
BAR GRAPH DISPLAY
Display Calibration for Gauges with bargraph displays
The calibration mode is entered by the use of a “password”.
There are two magnetic switches, one located at each side of the display.
These switches are activated with the use of a magnet.
Switch activation is visually confirmed by the toggling of the four closest bars on the
display to the switch. If they are on they will turn off, if they are off they will turn on.
A password will look like the following example.
L L L R R R
Enter the switch sequence with a magnet to enter the basic calibration mode.
Left Switch Left Switch Left Switch Right Switch Right Switch Right Switch
If the password is correctly entered, the left-most bar will turn on and flash. This indicates that
the display is ready to be calibrated for the low set point.
With the system adjusted to the minimum calibration point (the system should be empty or at
the lowest pressure condition) activate the left switch and then the right switch.
The right-most bar will begin to flash, indicating the display is ready for the high set point
calibration.
Adjust the system to it’s maximum operating condition. Activate the right switch followed by
the left switch.
The display will return to normal operation and indicate current system status as a percentage
of maximum calibrated capacity.
6
Flowmeter
The
Class1
comes with the digital display, a paddlewheel transmitter and a connecting harness (specify length). Mounting the transmitter to the discharge can be done with a
saddle clamp, a welded boss or a valve
adapter. Call f or options and specify pipe
diameter.
digital flowmeter system
Paddlewheel Installation
The flow display includes a totaliz er function. A momentary switch (optional) is required to operate this feature . The display
will continuously monitor flow when the
unit has power and display the latest total
volume when the totalizer switch is
pressed. The total flow is cleared when
power is removed from the unit.
FLOW METER
6-32x7/16
Lockwasher
O-ring
6-32x7/16internal hex
Spacer
Indexing Pin
White (Signal)
Black (System Ground)
8
7
6
5
1
2
3
4
Red (System Power)
DTM06-08S
Wire Insertion View
7
FlowmeterFlowmeter
Flowmeter
FlowmeterFlowmeter
Installation
The
Class1
the flow rate. The location of the paddlewheel transmitter is important for proper
operation and accurate readings. Mount the transmitter in a location that is accessible for future maintenance and in an area where laminar (non-turb ulent) flow is
most likely to be maintained. Most problems with flowmeter accuracy and perf ormance can be traced to the location of the transmitter .
The hole size for the paddlewheel transmitter (PN102714) mount is 1-1/2”.
The hole size for the paddle wheel transmitter (PN101199) mount is 1-7/8”.
T ransmitter Location
Elbows/Bends A straight run of pipe to the transmitter of at least six (6) times
the pipe diameter after an elbow or other turbulence producing item is desirable
for a successful installation. T ry to locate the transmitter using the longest straight
section of pipe available. Minimal turbulence at the transmitter provides the most
accurate reading.
Valves/Gates If the transmitter is downstream of a valve, the minimum distance is fifteen (15) times the pipe diameter. Whenev er possible, mount the
transmitter before a v alve .
Digital Flowmeter measures water velocity in the pipe to calculate
Horizontal Pipes The transmitter will work in any position, howe ver when mounted
on a horizontal run, it should be mounted in the top half of the pipe to allow debris
to be flushed out of the paddlewheel.
Increase/Decrease in pipe size The transmitter can be placed after an increase
in pipe diameter, ne ver after a decrease.
Class1
turbulence between the pump and discharge pipe.
Wiring
The Flowmeter system comes with a wiring harness that connects the transmitter to the display.
The OEM must supply power and ground to the digital displa y . Consideration
should be given to the conditions under which the displa y will have pow er.
The display is internally protected against short circuits, overvoltage and reverse
polarity , but standard installation procedures should provide f or circuit protection.
Maximum current used by the flowmeter is 1.5 Amps.
flexible hose can greatly assist in reducing the number of elbo ws and amount of
A momentary grounding switch can be added when the totalizer function is desired. This is connected to the display through the 8 pin mini-connector at pin 8.
8
Operation
The flowmeter displays the current flo w rate whenever the displa y has power and
the discharge is open. Range is 0 to 9995 GPM, LPM or IGPM as calibrated.
Totalizer
The display includes a totalizer function that displa ys the total amount of water
that has been flowed since the unit was turned on. This feature is enabled b y
grounding terminal number eight (8) of the display connector .
When in the totalizer mode, all decimal points will flash to indicate this mode.
While terminal number 8 is grounded, activating the left switch resets the totalizer
to zero (0).
The totalizer resets to zero whene ver pow er is removed from the displa y.
Multiply the reading on the display b y 100 (add two zeroes) for total flow.
FlowmeterFlowmeter
Flowmeter
FlowmeterFlowmeter
9
Calibration
Calibration matches the display to the paddlewheel tr ansmitter installation and
signal for a given flo w rate.
A method of accurately determining flow should be used to calibrate the unit.
A smoothbore nozzle and a Pitot gauge is suitable.
Flowmeter calibration must be perf ormed with the discharge flow stabilized at the
desired calibration flow rate.
Establish and maintain the calibration flow rate f or a minimum of 10 seconds to
assure an accurate and stable reading. When the flow is stab le, enter the
flowmeter calibration mode.
The calibration mode passw ord for the flowmeter isL L L R R R.
Switches are located at each side of the display.
These switches are activ ated with the use of a magnet.
Switch activation is visually confirmed by the lighting of the closest decimal point
on the display.
Enter the switch sequence below to enter calibr ation mode.
Calibration
L
eft Left Left Right Right Right
LEFT SWITCH LEFT SWITCH LEFT SWITCH RIGHT SWITCH RIGHT SWITCH RIGHT SWITCH
If the password is correctly entered,
follow ed b y
Using the right switch on the display, enter the flow rate you intend to calibrate. If
the department will use a standard flow for the discharge, use that figure for
calibration.
The speed that the display increments/decrements increases the longer that the
switch is held. If y ou pass the flow calibration n umber , “release” the s witch and
reactivate it. The display will “reverse direction” each time the switch is activ ated
and the speed will start out at the slowest rate.
When the number on the display matches the discharge flo w rate, check the Pitot
for the desired pressure and then activate the left s witch to complete calibration.
The display will read
0
.
donE
and then return to normal operation.
CAL
will be displayed for 1/2 second
10
Calibration is now complete.
Example CAL
Example Calibration (4”)
Install a Pitot gauge and a two inch (2”) smoothbore nozzle on the deck gun.
Determine the flow rate that you want to use. (70 PSI=994 GPM).
Start pumping water through the deck gun until the Pitot gauge reads 70 PSI.
Enter the calibration mode by bringing a magnet close to the left side of the display and
removing it three (3) times, the left decimal point should light with each s witch closure.
Bring a magnet close to the right side of the display and remove it three (3) times, the
right decimal point should light with each switch closure.
The display should read
Bring the magnet close to the right side of the display and hold it, the display number
should increase. When the displa y reads
If you stop short of
bring it close again for the display to increase. If you pass
close to the right side and hold it until the number decreases to
994
CAL
for 1/2 second and then
994
, move the magnet aw ay from the displa y .
, you must bring the magnet close to the right side, remove it and
0
994
, just bring the magnet
994
When the flow has been stable at 70 PSI for at least 10 seconds , move the magnet close
to the left side of the display and remov e it.
The display should read
Adjust the flow so that the Pitot reads 50, the display should read
Adjust the flow so that the Pitot reads 110, the display should show
All readings should be within +- 3 % of the 120 PSI value. (+-40 GPM f or a 2” nozzle)
Use a Pitot nozzle flow chart to select a calibration setting. Ideally it should be a v alue
close to the average r ate expected from the discharge.
Check your calibration with flow values that are lower and higher than the calibration
flow but within normal flow rates f or the discharge.
donE
for se veral seconds and then displa y
994
840
1245
Note:
There is a default calibration setting f or 2”, 2.5”, 3”, 4” and 5” schedule 80 pipes.
Pass word to enter default calibration:
L R R R L L L
Scroll through the pipe sizes with the right switch and select with the left switch.
The defaults will only work with schedule 80 pipe.
11
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