New Era NE-1000 Multi-Phaser Programmable Syringe - Manual (Page 32)

New Era Pump Systems Inc.
www.SyringePump.com
Model NE-1000 Multi-Phaser™
Publication #1200-01 27 08/01/14
Phase Function
12 LP:03
Phase Function Rate Volume Direction
13 RATE 900.0 mL/hr 17.25 mL Withdraw
Phase Function
14 BEEP
Phase Function
15 PS:00
Phase Function
16 LP:EN
9.4.5 Example 5: Control from a High-Low Pressure Sensor
10
25
m
l/
h
r
Pumping
Rate
Program
Output Pin
Event Input
Pin
Pressure high sensor
Pressure low sensor
Pressure trigger points
This example demonstrates a Pumping Program whose control depends on an external sensor. Assuming a
pressure sensor that is configured to detect a high pressure point and a low pressure point, the Pumping
Program individually selects whether it will react to the high or low pressure point.
The “Program Output” pin on the TTL I/O connector (pin 5) is used to select the high or low pressure point.
When low, the low pressure point is selected (PH:01), and when high, the high pressure point is selected
(PH:05). The Program begins by infusing continuously at 10.0 mL/hr (PH:02), while a background trap is set
for the low pressure point (PH:03). To create a delay when the pressure sensor is switched from high pressure
to low pressure when the “Program Output” pin is set, a small volume is pumped (PH:02, 06) before the
background traps are set.
When the low pressure trap is triggered, the pump sets the high pressure trap (PH:07) and begins to increment
the flow rate. The flow rate is incremented in 1.0 mL/hr steps with every 0.25 mL dispensed (PH:08-10). If
the high pressure trap hasn’t as yet been triggered, the flow rate will max out at 25.0 mL/hr while waiting for
the high pressure trap (PH:11). When the high pressure point is reached, the pump immediately will drop
down to 10.0 mL/hr (PH:02), and once again wait for the low pressure point.
Phase Function
1 OUT.0
Phase Function Rate Volume Direction
2 RATE 10.0 mL/hr 0.005 Infuse
Phase Function
3 EV:05
Phase Function Rate Volume Direction
4 RATE 10.0 mL/hr 0.0 mL (off) Infuse
Phase Function
5 OUT.1