Stemming Timer (HMZT1000)

Hummingbird's Stemming Timer allows existing stemming systems to be upgraded to provide highly accurate stemming times, which relate to higher accuracy of volume in each hole. A simple to use interface allows the user to select jobs, start and stop stemming and do once-off system calibration.

Designed for harsh industrial environments, the module features a tough fascia with integrated buttons and LCD graphics display. An industrial adjustable mount allows for optimum positioning for the operator.

The display is highly visible both at night and in sunlight due to the use of an industrially rated transflective graphics LCD display.

The integrated keypad and menu allows for customisation of the unit, initial calibration, job maintenance, and stemming control. An optional external switch input is also provided for stem start / pause function.

Up to 99 jobs can be loaded by the operator and will be stored in internal memory. Jobs no longer needed can be deleted.

Calibration in cubic cm per second of material delivered can be achieved in two simple ways:

• If time taken to fill a particular hole and the dimensions of the hole are accurately known, then a simple calculation of volume in cubic cm divided by time taken in seconds yields the calibration factor. This factor can be entered directly.
• If the characteristics of the vehicle are not know, the system can perform a calibration for the user. In system calibration mode, a container of known volume is used. The operator is prompted to start stemming and stop when the container is full. The user is then asked to enter the volume of the container. From this information, the unit calculates a stemming factor for the particular vehicle.

The user can make fine adjustments to the calibration factor as the job is in progress. These adjustments will compensate for small changes in the stemming vehicle over time as the job continues.

Operation is as simple as choosing a job and pressing the start button or the external switch. Once the stemming process has been started, a relay closes (or opens). This relay should be wired in series with the current operator start switch.

• 10V to 36V supply voltage
• Adjustable industrial mount
• Highly visible display
• Integrated user interface for customisation
• Highly accurate stem time
• Once-off calibration
• User fine-tune function
• Integrated relay output

• 1 Positive input voltage (10-36V)
• 2 Ground (0V)
• 3 Switch input
• 5 Switch input (ground)
• 9 Relay normally closed
• 11 Relay common
• 13 Relay normally open

• Input voltage: minimum 10V; maximum 36V
• Power consumption: maximum 2.5W (200mA @ 12V)
• Relay output: normally open or normally closed, 36V max, 1A max

• Dimensions – display module (mm): 110mm(width), 75mm(height), 25mm(depth)

• Operating temperature: -40^oC to +85^oC
• Storage temperature: -40oC to 85oC; 5% to 95% relative humidity
• Humidity: 5% to 95% R.H. non condensing at 60^oC

HMZT Stemming Timer rev 1-0.pdf
Stemming Timer Menu rev 1-0.pdf
Warranty

DISCLAIMER

Hummingbird Electronics Pty Ltd has designed the product for use in a broad range of applications. It is however solely the customer's responsibility to evaluate the device and determine it's suitability in their end application.

Hummingbird Electronics Pty Ltd does not suggest or make any recommendation as to the suitability of parameters that determine angle, height, impact, speed, force, accident, harsh braking, roll-over or rate-of-turn events, input or output voltage or current. Parameter values stated or implied in this document are for explanation only and should not be taken as typical or representative of a real world situation.

---

USE OF PRODUCTS

Products are not authorised for use in critical safety or other applications where a failure may reasonably be expected to result in personal injury, loss of life, or catastrophic property damage. If a customer uses or sells the products for use in any such applications, the customer acknowledges that such use or sale is at customer's sole risk. The customer will indemnify, defend or hold Hummingbird Electronics and their electronic component suppliers/assemblers harmless from and against any and all liabilities and costs arising out of or in connection with use of product or sale.